bài tập lý thuyết thống kê

Bookbooming
e i u H O I T R A c N G H l f e M
L l T H U Y f T
CHO CAC CAU SAU
1 fj$n KTtS^figke gifip clip viec nghien ci'ru cSi chung vac6i ritog m6i c ^ h i ^ j^ p . (D)
v £ ruytt <tdi ■thdtf'idi£ni phan anii su rich luy ve lurong cua hifcn tuqmg tioivg sdSi thdi -
nghien ctiu . (S)
3. So tuyet d6'i thfrl id p/a traRg cua hifcn luong nghien ctfii trong mfit ihcri difcin-
nha'l dinh. (S)
4. Piurcmg an binh plnrong cac chenh lfich gi&a cac gia tri If thuyet va cac gia trj tlurc le
cua bien pint thuoc . (£>)
5. Doi voi day so rhdi diem co khoang each thdi gian bang nhau ,mirc do binh qufin
tlieo tlioi gian chfnh la muc d6 binh quan cua tirng nh6m tai mttc d£> (D)
6. Phirong phSp chi s6 la pp phan tfch moi liftn he chG phep nghien ctfu cai chung ya h6
phan m6t cach hop li (Dj
7. Luang tang giam tuyet doi binh qu4n cuvet d&'i chi'nh la luong binh qu&n tang giam
tuyet rtfs'i lien hc§n . (D)‘
S. PE chi s6 la pp mang t/c t6ng hop khdng mang t/c ^han tich (S)
9. i!)ian to thO'ng ke chi nghien ciifu mflii quan he gLCfa mot tieu thirc nghuyen nh&n va
.•ii6t ileu thiic ke't qua , ($>)<
10. He so tirohg quan chi cho phdp tliay duoc cirimg dp cua moi lien he tuong quan
tuyeh rfiih: . $ȣ
! 1. Toe do tang giam binh quan cua cac luong tang giam tuyet doi lien hoan . (S;
11. Nghien ci'ru gia tri tuyet doi c ua luong tang (giam) cinnh la sir van dung ke't hap so
tuong do'i va tuyet do'i. (ft)
13. Chi so gia c;i cua indt nhom mat hang la chi tieu ura mang u'nh rOng hop vira mang
i/nh phan tich . (D)
Nghien ci'ru chi s6' chung cho phep thiiy diroc bien dong cua tirng phan nr don vi ca
bier ciiahien tuong phCrc tap . (S).
15. Cung nhu so binh qu&n tniu duoc dung de iroc luong so binh quan chung ry 15 iheo
mot tieu iluic nao do cua mSu duoc dung de u6c luong cho phirong sai chung (Sj

lb. Phan to co khoang cach to chi duoc ap dung trong trirong hop bie'n tieu there bien
thicn lien luc . (S)
17. TChi nghien ci'ru so' tuong do'i va sf> tuyet dfi'i chi cSn xet de'n d d cua doi tuong
nshien ciru de rui ra ke't luftn . (S)
i S. S6 binh quto h\ mot trong cac pp duoc dung de nghien ciru cac qua trinh bieii di>ng
qua thoi gian . 't»
19. Chi so klidi lu'png san phim la chi tieu vira mang tinh tdua hop vtra mang tfnlv
nhau ti'ch . ■'{-•!
Dai hoc Ngoai thifang
Book boom ing
20, Trong cflng thurc chi so lieu luong ve gid ca Khoi ltrcmg hang -ieu’fii
tro nhan to' thdng udc chung ^35'
21, Sai sd binh quan chon miu theo pp chon nhieu lan bao gia cung nh’6 hon hoS\
bftng sai s6 binh quan chon theo miu theo pp chon mOt lin . (S)
22, Khi nghien ciiu den s6 tuong ddi va tuyet ddi. can xet den cac diem cua hien tuong
nghien ciru di rut ra ket luan ',0 >
23, Nghien ciru he s6 tuong quan khOng chi cho phep thay dityc vai trd cua timg tieu
thdrc nguy6n nhan doi vdi tieu thufc ket qua (D)
24, Khi nghien ciru thdng ke can van dung ket hop gia tri luyet ddi cua tang gjam lien
hoan vS dinh gdc . (S)
25, Nhiicrc diem cua dd lech tieu chufc lA dd tfnh v6 nghla . (S)
26, Khi ti'nh he so bie'n thien co h i dung mjiS thay cho sd binh quan . (D)
27, PP binh quan nho nh£t 1A sir t<K thi<iu hoa binh phuong c ic ch6nh lech gifra cac gia
tri thuc te va cac gia tri cua bi£n phuthudc . (S)
28, Phan t6 thdng ke vira nghifin cthi mdi qh giua cac tieu thurc nguyen nhan va tieu
thuc ke't qua , vira nghien cuu mdi. qh giQa nhieu tieu thiic nguyen nhan va mdt tieu
- thuc ket qu a. (D)
29, Du doan dira tren luong tang (giam )tuyet ddi binli quan chi duoc thuc hien vdi.day
so thdi gian cung tang (g iam ) vdi m dtluong tuyet ddi gin nhu nhau . (D)
30, PP dir doan dua tren nguyen tic tdc dd pt binh quan chi duoc thuc hien vdi day sd

thdi gian cung tang (gidm )vdi mOt lucmg tuyet ddi (S)
31, Cung nhir binh quan miu duoc dung de udc luong s6 binh quan chung ty le theo
mot lieu thuc nao day cua mau duoc dung de’ u6c luong cho ty le ciia tap the chung
phuong sai cua mau duocc dung de udc lucmg cho phuong sai chung . (D)
32, V6i cac yeu cAu nhu nhau ve do tin cay va pham vi sai sd chon miu .Ne'u chin
mau theo pp chon mOt lan se cAn ft dcm vi hon khi chon thed pp chon nhiiu liin (D,i
33, Phan td c6 khoang cAch t6 khdng chi duoc Ap dung trong trudng h<?p tuong bien
lieu thuc bie'n thien lien thien lien tuc . (D)
34, Nghy4n cuu bie'n ddng cua binh quan cho tha'y xu huppung pt cua hien tuong qua
thdi gian (D)
35, co the diing sd tuyet doi de so sAnh 2hai hien tuong cung loai nhung khac nhau ve
quy md (S)
36,chi sd la s6 tuong ddi ,vi vay ta't ca sd tuong ddi dfeu la chi s6 . (S)
37,sai sd binh quan chon miu theo phuong phap chon rihi€u bao gio cung Ion hon
hoac bang sai so binh quin chon miu theo phuong phap chon mot lin . (D)
38,trong cdng thuc tt'nh sd dcm vi can thie't de chon miu khi murin iroc luong ty le cua
trfng the’ chung .ngudi ta thay phuong sai cua tOng the’ chung bing»£htf#ng sai gin
0.5nhat trong cac lin didu tra trudc d6 .
JI) HAY Ll/A CHON eAU TRA I ,6l DUNG CHO TUNG CAU HOI SAI! DAY:
can ira Ic/i dting duoc in nghieng
Dai hoc Ngoai thipang
Bookbooming
; iipitg ngkfin curu cua kfioa Hoc thdng ke la:
■j. Mai luong thuantuy cua hifen tuong tir nhifin.
!>l)i ’.irang trong mtfi lidn hft vdi mat chftt cua cdc hien tuong va qua trinh kinh te - xii
Ijoi so Idn trong didu kien thdi gian va dia die’m cu the’:
c. Chi nghien ant cac hien tuang sd lan
d CM nghien ctfti car hien ttfrng cd hier.
He thong chi tieu phan dnh
a. Cac khia canh quan trong nha't cua tdng ihc’ chung

b. C fc khi a canh quan trong nha't trong tdng th£
t Mot lien In’ cua id’ng the vdi ca c hien tinmg lien quan
,7 :J ia c dung
3. Khi nghien cuu bien dong ctia cac hien tuong phuc tuo. can tien hanh phan to he
fitting kii vi:
a. Phan to cho phcp thay duoc hien dong cua toan b6 hien tuong qua thdi gian.
!:> Phan to chiiih la mot phuong phap nghien ciru lien hi.
:. Phan 16 cho thay tain quan tiong cua timg bo phan trong tdng the.
h \.) c
<’ cd a. h vd c.
4. Luang hdng thdng cua cac nhan vien trong mdt cdng ty dao dong til 160.000-
640 000. Sdlieu duac phan ihanh 10 to vdi khoang cac to bang nhau. Hay chi ra:
a. Cudi hon tren cua td lan nha't va gidi han dudi cua to nJio nhat: 640.000d, 160.000J.
b.Khoring ;.ach td. 4S.000d
c Tri so giira ctia timg so: 184.000. 2.<2.000. 2HU.iHJ0. 228.000, 376.000. 424.0(H).
-"2.00O. 520.000, Sbk.MO. 6 1(>.000.
•>'. Trong cat: y sail day, y nan bie'u hien sd tuyet ddi:
a. Quan he so sa.nh gifra gia ca cac mat hang gil'ra cac thj w dng.
I;. Oirt ca cua cSc mat hang tai cac thj trtfdng khac nhau
c. lo n g gia ca cua tat cica c m&t hang kJitlc nhat: tren 1 thi truftng.
i. Kliong diftu nao trong sd cac di6u tren la tiling
i' <\i h vd c.
(>. S d cdng nhan trong hop dong ctta mot Cdng ty ky rao ngdv 1I2I199S la 300 cdng
i/hdn. Do yeti cau cdng viec, ngdy 1/3 cd them 30 ngitiri mra duac ky hap ddng.
Tong so cdng nhan trong 2 thdng cu cdng ty Id:
a. 330 ngudi.
b. 630 ligtrdi.
i Khon:> tinh duac
7. Trong cac sd lieu sau, sd lieu ndo 1a so tuong doi dd
a. G'w vdng thdng 3 tdng 10% so vat thdng 2

b. tJid vdng lining 3 bang 110% .so \cri thdng 2
:: 'ji.i vaag ihan.a ? 6 TP HCM bang lOO'fr so '6 i Ha No;
Dai hoc Ngoai th iro’ng
Bookbooming
;!. Ci-A vSng thing 3 6 TFHCM cao hcni 10% so vdi HA NQi
6. Du&ng b iiu d iin md'i liin h i thuc tig iu a titu th&c nguyin nhdn vd tieti thfc kit
qua duoc goi Id:
a. Dudng hdi quy \$ thuyfit
b. Dtrdmg hdi quy thuc nghiem
c. Dirimg luyfi'n tfnh
d. Dirtmg phi tuytfn tfnh
9. Trong nhung y du&i ddy, y ndo Id tdc dung cua day sd' thdi gian :
a. p/dnh bifi'n dQng cua hiftn tiring qua thdi gian .
b. Nfiu lfin dw?c xu th£ bi£n dijng cua hifin tiling.
c. Tfir day s6 thdi gian cho ph6p dii dodn mtic d<> tuong lai cua hifin tuqmg .
d. Tdftca cdc y trin diu dung .
10. Trong nhOng cdu sau ddy, cdu ndo ddng :
a. S6 lugmg ddi Id chi s6' .
b.Chi sd la sd'tuong d d i.
c. Chi sO chi bi£u hidn quan he so sdnh giua 2 hi$n tirpng cd bifit.
d. Ttft ci cdc cdu trfin diu ddng.
11. Ddc diem cua pp chi s6 liin hoa Id : khi c6 n hiiu nhdn t6 tham gia tinh todn chi
sd':
a. Chi c6 mQt nhdn to' cO' djnli cdc nhdn t6 cdn lai thay doi.
b. chi cd m$t nhdn tdnghiin ci'ru lhay d d i, cdc nhdn td'cdn lai cd'dinh .
c. mOt s<5 nhdn ttf s6 du<?c c6 djnh. mOt s<5 nhan t<5 c6n lai thay do i.
* KhOng di£u ndo trfin la dung.
12. U&c luong Id :
a. Vific tfnh todn ddc tnmg cho tOng thfi m5u
b. Viftc tfnh todn cdc tham sd ddc tnmg cho t6ng thi chung

c. Tir cdc hi£u bifi't vfi cdc tham sO' ddc tnmg cho tOng th<5 chung suy ludn ra thdnh cdc
tham s6 cho tOngthfi mdu
d Tv cdc hie’u bie't v<f cdc tham sdddc tnmg cho td’ng th i mJu suy ludn ra cdc tham so
cho tdng thi chung .
13. Thi ndo Id tdng th i thdng k i .
a. Trutoig DH KTQD.
b Tip th£ cdc ban hs dang h<?c .
c. Id hifn tifpng KT-XH sd Ian gdm nhlbig don vi (hoac phdit til hifn tifcmg ) cd bid!
cd§ duoc quan sat vd nghien ciht.
d. KhOng didu trong s6 cdc diiu tren k dung .
14. Thdi kid itu (raid :
a. DO ddi thdi gian diin ra cuOc di£u tra .
b. DO dSi thdi gian nhdn vien difiu tra di thu thdp tdi lifiu
c. D(! ddi thdi gian co sir tlcli lux re nidi htong cua hiin tuong ditu tra .
4
Dai hoc Ngoai thirong
Bookbooming
d. Ca a,b,c dfiu ditng.:
c. ck b va c diii diing
15. Trong cdc $6 sqitja y sd'ndo Id s6’tuong dSi khdng gian :
a. Gid vang thing 3 h HN thdp hon 10% so v6i TPHCM.
b. Gid v&ng thing 3 b HN thfitp hon 10% so v6i thing 2.
t. Sd nam S lop cdc ban bdng 120% so vm sA iiit tirdiig cung lop
d. KhOng c6 s6 ndo trong s6 tren Id tuong do'i khdng gian .
16. Do tinh khd khdn cua cdng viec, (Un luong ngdy cia.mpt cty tdng thim 300% .
Sau kkhi cdng viec kit thuc ,m(tc tiin luong ngdy cua cty gidm 75% . Anh (ch i) c6
kit ludn gi?
a Cdng nhdn trong cty duoc nhdn iniic lucmg ddu
b. SO' lurong duoc nhdn luc cdng viec kh6 khan ft hon ipirc luong duoc nhdn ltic cftng
vific kho khan ft hcfn.

c. $ 6 luong duoc tang lfin luc cftng vific kh6 khdn ft hon mtfc luong duoc nhdn sau khi
cOng vific kfit thuc.
d. Khdng difiu nao trfin ddv la dung .
17. Nhrnc Him cua so binh quan Id :
a. Nfiu lfin miic do dai difin cua mOt tdng th£ thco mQt tieeu thtrc ndo d6 .
b Mang tinh ting hop vd kkhdi quit cao
c. Rat nhay cam vcri cdc hrang bien ddt xuat
d. KhOng nhay cam vdi cdc luong bifi'n dot xua't
18. M6t cty duac thdnh Idp tic ndm 1987 . Den ndm 1992 ,ba cty sat nhap vdo vdo
mot cty . Tong von huy ddng cua cty iri.<ng suot thdi gian dd nhu sau (da. loai M lam
phdl)
Nam 1987 1988 1989 1990 1991 1992 1993 1994
VLD 200 220 300 370 400 1300 1350 1500
V6n liru d6ng (VLD) binh quan cua cty trong 8 n5m qua Id :
a. 400
b. 11383
Khdng n(n tinh khoang thdi gian dd .
f9. Trong cdc cdu sau cdu ndo dung :
a. Chi s6 chung la chi s6' tudung d6i
b. Chi s6' cd thfi Id chi sO' tuong do'i
c. Chi stf chung va chi s6' ca thfi dfiu Id chi s6 tuong d6'i
d. KhOng c6 loai chi sO' nao la chi s6 tuong do'i
Cd a,b,c din diing
2d. K hi diing pp ch i binh quan de tinh chi so phdt triin cho gid ca , quyin sd' ctia
chi sd'dd Id
<i. Mure tiiu thu hang hod ky nghiin cim
a Luong tifiu thu hdng hod kv nghifin ci'ru
Dai hoc Ngoai th ro n g
Bookbooming
c. Miic tifiu thu h&ng hoi ky gd'c

d. LirqJng hitng ho£ tieu thu ky gdc
21. Trong khi tifn hdnh dii'u tra chon mAu, nhitng loai sai sd" ndo dudi ddy cd thi
xdyra
a. Sai sO do ghi chep
b. Sai sd' do tilth dabble it
c. Sai stf chpn miu ngSu nhifin
22. Sai sd' do tlnh dai btfu Id:
a. sai sd xiy ra khi thu thftp sd lidu
b. Sai stf do khOng khSch quan khi chon c£c dcm vi vio miu
c.i Sai sd xiy ra do chi didu tra mdt sd ft don vj mi lai suy rQgn cho toin bQ tdng the’
23. Tdng thi ndo dudi ddy Id thdng thitiim dn.
a. Tdng ih£ nhitng ngudi say mi nhac beatle.
b. Tdng thd nhung sinh viftn dang hpc tai trudng DH KTQD
c. Tap thd thfiy c6 giio giing day tai trurdng DH KTQD
d. Tdng the do&n vifin cua 16p cfic ban.
24. Xdc dinh thdi diem diiu tra
a. Dd c&c nhfln vifin didu tra di ddn cic hQ gia dinh thu thftp thdng tin vao thdi didm dd.
b. Dd ghi chdp mdt luong Cua hien tirgng v&o thdi didm dd.
c. Vi hien tuong ludn ludn bie'n ddng nCn phai cd djnh mat luong cua hien tiring tai q
thin didm dd tiftn viec thu thap tki lieu.
d. Cd b vd c
25. Sau khi phdn t6 thdng ki
a. cac dcm vj ca biet c6 dflc didm gidng nhau theo lieu thu'c phan t6 duoc dua vio mdt
t6.
b.
Cic don vi c6 dac didm khic nhau tho tieu thuc phan t<5 duoc dua vao c4c t6 khdc
nhau.
c. Critta cdc t6 c6 tlnh chat khic nhau.
d. Cd a, b vd c deu dung
itf. Anh chi da cd 2 cdng thucc Unh sd'binh qudn nhu sau:

x = ^ A ( l ) ' X = IX d(2 )
Hai cOng thuc lr$n dua kai cung mdt ke't qua vi:
a. cung dilng dd tlnh s6 binh quan
b. Quydn s<5 trong (1) bidu hien baaawngf sd tuyet ddi (2) bidu hien bang sd tuong ddi
do vay tthuc chat hai cdng thuc 1& mQt.
c. hai cdng thdrc nay thirc chat U mdt
d. Quydn sd trong (1) bidu hien bang sd tuong ddi (2) bidu hien bang sd tuyet ddi, do
vay thuc chat 2 cdng thurc la mdt.
Dai hoc Ngoai thimng
Bookbooming
3, y (hi diem cua trungvi:.
a. San birig mpi chftfth ldch gifta c4c tuong bitfn .
b. Bi«’u hifin tntfc dd chd bifi'n nha't cua hifin tmjmg
c. Nhay cam vdi su bifi'n thifin cua tifiu thuc .
A Loai trir &nh hirdng cua nhflng luong bi<?n d6t suit
28) Trong cdc cdu sau ,cdu ndo khdng diing.
a. Sd tuyfit ddi p/a qui m 6, khdi luong cua hifin nrrmg lai nhflng thdi di6m nha't dinh
b. So tuyfit ddi p/a qui m 6 khdi luong cua hifin tuong trong mflt dd dii thdi gian nha't
dinh
c. Sd tuyfit ddi cho phfip di sau phan tich dSc difim ban chat cua hifin tuong .
d Ca a v& d .
29) Khi xac dinh m trong mot tdp hap sd'lieu , cdng viec Mu tien tien hdnh Id :
a. xac dinh s6 dung owr vi chi chi'nh giuairong tap hop sd lieu d6 .
b. sac dinh xem s6 luong don vj trong d iy ia chin hay le .
t?. sip xep day sd theo thii tir tang din hoSc giam dSri.
d. xac dinh xem tinh M theo cdng thtrc don gian hay cOng thuc cho day sd phan td .
30. Trong nhtrng chi tiiu du6i day ,chi tiiuu nao Id chi tiiu tdng gidm tuyit ddi.
a. Nam 1994 v6n hru ddng cua cdng ty bSng 150% so vdi nam 1992 .
b. Nam 1994 vdn luu ddng cua cty bfing 50% so vdi n&m 1992.
:. Binh quan mdi nam vdn kru ddng cua cty tang 24%

il Nam 1994 vdn luru ddng tg 2 00 trifiu so vdi n&m 1992.
il. Tit thdng 2 ndm 1995 do nhu cdu cua cdng viic , cty ki them hap ddng v&i mdt
tii cdng nhdn .Tdng $6' cdng nhdn ducrc ki hop dSng tdng thim 30% so vdi truftc khi
cdng nhdn gdp khd khan . Anh (chi) c6 ket ludn gi?
a. Sd cdng nhan c6 viec lam trong cty bay gic< ddng bang sd ngudi trong hop ddng
trirdc thang 2/1995.
b„S£> cfing nhan trong cty bay gid nhifiu hem so vdi sd cdng nhan trudc 2/1995.
* Chua the’ kfit lufln duoc vi thifi'u sd lucmg .
32) Tai sao khi dung pp chi sd' binh qudn de tinh chi sd phdt sinh chd khdi lucmg
hang hod tiiu thu , ngudi ta diing chi sd'binh qudn cdng gia quyin md khdng dung
chi sd binh qudn dttu hod , vi chi sd’ binh qudn dieu hod khdng cho mdt dip s6‘
diing vi chi sd' binh qudn cdng gia quy in thudn tiin hon cho trudmg hop ndy.
a. Vi quyfin sir dung kkJdii tfnh chi sd nSy 1& mdt sd lieu thuc tfi' dd vSy thuan tifin hon
v<? mat sd lifiu
: b. Vi quyfin sd sir dung khi tfnh chi sd n iy Ik mdt sd lifiu gia djnh
33) Trong cdc gidi phdp dudi day , gidi pha ndo cd tdc dung Idm gidm sai sd' chon
mdu ngau nhien ,
a. Tang sd don vi theo mftu ,
b. Giam phucrng sai cua tdng the chung .
c. Sir dung pp tao man thfch hop ddi vdi tirng hifin tuong nhhifin cdu
7
D ai h o c Ngoai thifan g
Bookbooming
ca a . vft c .
c!. cia, b, c,
34) Khi ditrig pp chi sd binh qudn d i tinh chi sd'ghdt triin cho khdi luprig h&ng hod
titu thu toed 2 cdng thfc sau .
Irtf t, m T _ £ A
Ia,,p»
a. Trong cOng thiic 1 quyin sd lft a,,, po.

b. trong cdng thtic 2 quyin sd lft dn.
35. Trong cdc cdng th&c sau , y ndo khdng ndm trong cdc tdc dung c ia nhdn td'
thdng ke
a. phftn td thdng ke giup cho viftc nghien ctiu cii chung vft cix rifing m<>t cftch kS't hop
b. phftn t6 thdng ke lft pp quan trpng didu tra vft phftn tfch thdng ke
c. phftn t6 thdng ke pghien ctiu bin' chtft cia hien tiling KT-XH.
d. Phftn to thdng k4* lift cd sd vftn dung cftc pp sd binh quftn hdi qui tuong quan.
e. khdng cd y nao
36) y nghia cua h i sd hdi qui
a. P/a Anh hudng cia cftc tieu thiic nguyen nhftn khftc d£n cftc tieu thtic k£t qui -
b. P/a Anh hudng cua tieu thtic nguyen nhftn dang nghien ctiu d£n tieu thiic keft qua.
c. P/a dd ddc cua duftng hdi qui ly thuyft
d. CA b vft c ddu dung
37) Cd cdng thdec tlnh sd'binh qudn diiu hod nhuq sau :
X = Id ,/X,
Trong cdng thtic nfty d, la :
a, Sd tuyet ddi.
b, T6ng luting bi€n tieu thtic .
c, bidu hien k<St cft'u cua lixqrng bidn tieu thtic .
d, (thdng cd diiu nfto a tr£n 1ft ddng .
38) Sd binh qudn cQng duqc ddng di7 tin h :
a, sd binh quftn cua nhOng lupng biln eft thd cd quan he tdng.
b, sd binh quftn tit dfty sd phftn phdi.
c, Sd binh quftn cua cac sd binh quftn to.
* C i a. b, c.
39) Sd binh qudn duoc dung d i tinh :
a, Sd binh quftn cua nhtfng lupng bidn cd quan he toong.
b, Sd binh quftn cua cic sd binh quftn td .
c, Khdng didu nfto 6 tren 1ft dung .
40) Khi tinh chi sd gid cd giira 2 thi truing A vdBta sii dung quyin sd Id :

a. khdi lifqmg hftng hod tieu thu a thi trudng A.
b, Hang hoi tieu thu 6 thj tririmg B.
8
Dai hoc Ngoai thuang
Bookbooming
* c Tdng khdi hrc<hg h&ng hod .tieu thu d c4 2 thj tnrdng c&a tflmg mat h&ng .
*ci a,b,c:
41) fliu tinh chi sd' khdng gian khdi lucmg hdng hod tiiu thu trin 2 th i trudng A vd
B ta s i dung quy insti Id :
a„ G ii ci cua tflmg mat hing A v i B.
b, Gia ca c6 dinh cua tirng mat hkng do nhi nude qui dinh
Gid c i binh quin cua tflmg mat hing trfen 2 thi trudng .
d< Ca b vi c.
42) Nhucrc diim cua M 1 Id :
a, San bling bu trur chftnh lech gidra c ic tuong biin
b, Chiu inh hudng cua luqng bi£n d6t xutft.
c\.K£m nhay h£n vdi sttbiffn thitn c&a-ttfliHhtirc .
d, Chi tinh vdi tdng thi ft don v j.
43) C h i sd'cdu (hdnh c6 dinh pla:
a, Bie'n ddng cua bin than tieu thile dang nghien ctiu .
b, Bie'n d6ng cua tdng luong bidSn tieu thtfc .
c, Bie'n ddng cua kit cfi'u tdng the theo tieu thuc dang nghien cltu .
d, Bie'n ddng cua tat ck cAc tieu thuc tren .
e, Ca a v i c.
44) C h i so anh hudng k it cdu pi a
a, Bie'n d6ng cua ban than tieu thirc dang nghien cihi.
b, Bie'n ddng cua tdng lu<?ng bie'n tieu thirc .
c, Bidfn dOng cua kit ca'u tdng th£ theo tieu thirc dang nghien ctfu .
d, Bie'n dOng cua ta't ca cic nhan td trin.
e, Ca a vh c.

45) C h i tiiu thing k i pla .
a, Dac die’m cua tung dcm vi tdng the .
b. Dac di^m cua toin don vi tdng th£ .
c, mat luong gan vdi mat chat cua liien tuowngj KT-XH.sd ldn trong di£u kien thdi
,gian vi dia die’m cu the’ .
d. Ci a, b, vi c .
46) Ndi dung diiu tra Id .
a, Tdng hop c&c chi tieu , cdn thu thftp tai lieu tren cic don vi didu tra .
c, c ic khfa canh cdn thu thap tai lieu cua tdng the chung.
;l: Ca a, b, vi c.
47) Qua diiu tra chi tiiu 2000 hd gia dinh , ngudi ta thu duffc M1
~t.000.000 d/thdng, sd'liiu tren cd y nghJa gi?
V Bin h quan mdi hi> chi tieu l.OOO.OOOd/thing .
b, Da sd cic h<J gia dinh chi tieu lOOO.OOOd/thdng .
9
Dai hoc Ngoai thuang
Bookbooming
c, 50% hQ gia dinh' c6 mure chi tieu lOOO.OOOd/thdng trd len vi 50% hQ.'gi&’dlnh c6
mite chi tifiu l.QOO.OOO.dAhing trd xudng.
d, Chua thi ket luin .
48) Sau khi xdc dinh chuamg trinh hdi q u i, chi tiiu p/a cu&ng dQ cua m il liin h i :
a, He sd tirefng quan .
b, Ty sd tuong quan.
c, He s6 hdi qui.
d, Ca a vi b d€u dung.
49\ Td'c dd tdng (gidm) binh qudn Id :
a, Ty s6 giOa lupng tang (gilm) djnh gdc vdi mite d«J binh qufln.
b. Ty sd giOa luong tang (giim) dinh gdc vdi mite do ky gdc cd dinh .
p, L i chi tieu tuong ddi ndi len nhOng didu tang (giim) dai difin trong m$t thdi ky nhat
dinh.

50) Trong cdc cdu dudi ddy, Cdu ndo Id lac dung cua pp chi sd.
a, Bi6u hien bie'n ddng cua hien tuong kt-xh theo thdi gian .
b, Biiu hien bi£n ddng cua hien tuong kt-xh qua c4c dja diem khde nhau .
c, Phfin tfch mdi lien he gifla cdc hien tuong .
d, Caav&b.
e,. Ca a, b, c.
51) Khi tiin hdnh chon mdu , Sd'don vi duoc chon ra dedieutra phu thudc vao cdc
y£u td ndo trong cdc y i‘u td dudi ddy.
a, Dd tin cdy cua udc luong ■
b, DO ddng diu cua tdng the chung .
c, PP chpn mSu ,
d; Tat ca cdc ye'u td tren.
52) Khi xdy dung chi sd liin hop cho khdi luong hdng hod tiiu thu , quyin sd duoc
chon Id gid cd dcm vi hdng hod vi:
a, G ii ca biiu hien ty trong mite tieu thu cua cua timg mat hang trong tdng mite tieu
thu.
b, Ggiup cho cdc quyin sd tdng thi bao gdm cdc phan ttr khdng cdng duoc vdi nhau
bAng tdng thi cdc phin tir cdng duoc vdi nhau.
c, Gia ca hing hoi khac nhau cd inh hudng d£'n bien ddng cua luqnig hang hod tieu
thu.
d^Ci a, b, c.
e, C ab v a c .
53) Sau khi phdn td la cd :
a, Cic don vj trong cCing mdt td cd t/c gidng nhau .
b, Cdc don vi trong ciing mdt td cd t/c khac nhau theo ti6u thurc phan td .
d, Cdc don vj trong td cd t/c gidng nhau hole gSn gidng nhau theo tieu thiic phan td
, £ Qa a v i c.
10
Dai hoc Ngoai thuang
Bookbooming

■,) l ap thithhdng k i .
a, Tap hop cic hifin tirong kt-xh .
b, Tap hop cSc don vj hoac phan tur c& bifit.
c, Tap hop cic don vi hoSc hifin tirong c i bifit can duoc quan sat va phan rich mat
luong.
* Ca b, va c.
Tra lai cau hoi thuyfi't:
C H ITO NG I
Cdu l.Dd'i tuong cua ly thuyi't thd'ng k i Id:
a, M6i trucmg cua hifin tuong tu nhifin
b, Moi truing trong mdi lifin hfi vdi mat chat cua c ic hifin tu<?ng KT-XH s6 ldn trong
dk ihai gian vi dia diim cu thi
c, Chi nghifin ciru cic hifin tuong s£> ldn
d, Chii nghifin ciru cic hifin tucmg cd bifit.
Cdu 2) T h i ndo Id tdng th i th in g k i
a, Trucmg DHKTQD.
h. Tap thi ldp c&c ban dang hoc .
c, Li hifin tuong KT-XH s6 ldn g6m nhung don vj cd bifit can dtrcfc quan sdt vi nghifin
cun theo mpptj hoac m6t s6 tifiu thtfc nio dd
Cdu 3, Tdng thidu& i ddy Id tdng the tiim an (SGK) trang 6.
a, long thfrnhung ngudi say mfi am nhac Beatle b,
b, TOng thi nhftng sinh vifin dang hoc trong trudng KTQD .
c, Toan bf» thdy cO giao day trudng KTQD.
d, Ting the dokn vifin cua ldp cac ban .
Cdu 4) Phan bieetj ttdng th i dang chit vd khdng ddng c h it.
a, Tifiu thirc tifiu thirc cua cac dcm vj ting thi .
b, Mat luong cua hifin tirqmg dang nghifin cuu .
c, Muc dtch cua vific nghifin curu su gidng nhau hay khdc nhau cua don vi ting thi
theo tifiu thtic nghifin ciru .
Cdu 5). a, Ddc diim cua den vi tdng t h i

b dac difi’m cua to&n thi ting thi .
Dac difim cua m6i nh6m duoc trong ling thi .
c, muc dich nghifin ciru cua thO'ng kfi .
Cdu 6) Cdc dubdo thd’ng k i Id b iiu hien cua :
a, tifiu thirc thdi gian .
b, tifiu thiic khftng gian .
c, Cic biiu hifin gian tifip qua tifiu thdrc cu thi .
cl. cac biiu hifin iruc tifi'p cua tifiu thuc thing kfi.
Cdu ?) Chi tieu thong ke phan anh luong :
11
Dai hoc Ngoai thirong
Bookbooming
a, Dae di&n cua tCmg dcm vj t6ng the.
Die diim cua tokn b<> cic don v| tdng the.
c, mat lupng gin vdi mat chit cua hifn tu<^ig KT-XH s<5 ldn trong dk thdi’gian v i dj<r
didm cu th^.
* ca a v i b .
CHU ONG n :
Cdu 8) H i thdng cdc chi tiiu p/a.
a, Cdc khfa canh quan trpng nhfl't cua tdng the chung.
1}, Mdi lien he cua tdng thd vdi tit c i cic hiftn tucpig lien quan
c, Cac khfa cang quan trpng nhit cua don vj tdng t h i.
* a a v i b.
Cdu 9) Thdi ki dUu tra Id (dd ddi thdi gian cdn d i thu thdp tdi U fu.)
a, D<) dii thdi gian diin ra cuQc didu tra.
b, Dd dii thdi gian nhan vien didu tra di thu thip tii lieu .
c, Dd dii thdi gian cd su t(ch lup vd lifting cua hien ttft^ig dang didu tra.
C i b v ic
Cdu 10) X&c dinh thdi diim dUu tra Id :(thditi diim 1dm md'c d i ghi chip tdi tiiu
chung phdiphU hap vdi tdng hiin tuong.)

a, Nhin vi6n didu di de'n cic hd gia dinh thu thip thdng tin vio thdi didm dd .
b Dd ghi chdp mat luong cua hien tuqmg vio thdi didm dd.
c, Vi hien tuong ludn bie'n ddng ndn phai cd dinh mat luipng clia hien tuc^ng tai mdt
thdi didm dd tien viec thu thflp tii lieu .
•Cab v ie
Cdu 11) Ndi dung d iiu tra Id :
a, T<?p c ic chi tieu cin thu thip tii lieu .
b, Tip h<#> cic die didm cin thu thip tii lieu tren cic don vj didu tra .
5»Cic khfa canh cin thu thip tii lieu cua t6ng thd chung .
*Ti't ca c ic ^ kie'n tren.
Cdu 12) Phdn t(ch thdng ke Id a^ Dua vdo mure id cua hiin tupng trong qud khti
niu lin duac bdn chd't cu th i va tlnh qui ludt cua h iin tucmg.
b, Xir ly tii lieu thu hip dupe trong didu tra thdng kd .
c, Tip trung vi he thdng hoi tii lieu thu dupe qua didu tra thdng ke
*Khdng cd y kidn nio tren l i dung .
CH l/O N G i n
Cdu 13) N hiim vu cua phdn tS thdng k i la .
a, Phin chia loai hinh KT-XH va kdt ci'u cua hien urong nghien cihi.
b, Nghien cihi kdt ci'u tdng thd vi mdi lien he giCra cic tieu thiic.
6. Phin chia loai hinh kinh te' xa hdi vi bidu hien mdi quan he gitfa cic tieu thurc kd't
ctfu tdng thd.
d, Ci a vi b, c ddu khdng dung.
12
Dai hoc Ngoai thuang
Bookbooming
Cdu 14: Sau khi phdn pd (a .cd
a. C&c dan vj trong mOt t6 cd tfnh chit gi<5ng nhau
(j, C£c •dcm vj trong mdt t6 c6 tfnh chat kh£c nhau trtnt tifiu thirc phan td.
* c. Cic don vi trong mdt td chuc cd tfnh chit gidng nhau theo tifiu thuc phan t6.
d. Ca a vi c.

Cdu 15. Sau khi phdn td thd'ng ki.
a. Cac dcm vi ci bifit c6 dac diim gio'ng nhau diia trfcn tiftu thtirc phan t6 ducfc dua v&o 1
t6.
b. Cic don vj c6 dac diim khic nhau dua trfin tiftu thiic phan 1
6 dtroc dira vk> cdc t6
khic nhau.
c. GiQa cac t6 c6 tfnh chat khic nhau theo tieu thifc phan td.
* d. Ci 3 cau trtn dfiu diing.
Cdu 16. Trong cdc y sau, y nao khdng ndm trong tdc dung phdn td thdng ki.
a. Giup cho nghien citu c£i chung vi c4i rifing mOt cfich kfit hop.
b. Li phirong phip qUan trong trong diiu tra v& pjiftn tfch thd'ng kfi.
c. Nghifin curu bin chit cua hifin ttrcmg kinh 16 xS hdi.
d. La co sc( van dung c ic phirong phip sd binh quan, h6i quy tuorig quan.
~ e. Khdng c6 $ nio.
Cdu 17. Luong hdng thdng cua cdc nhdn viin trong cdng ty giao ddng tit 160.000
ddng. S d liiu duoc phdn th&nh 10td bdng nhau. Hdy chi ra.
a. Gidi han trfin cac td ldn nhit v i gidi han dudi cua t<5 nhd nha't.
b. Khoang cich td.
c. Tri sd giira tirng td.
Cau 18: Trong cac cau sau, cau nk> li tie dung cua phan td thd'ng kfi.
a. Chia tdng thi khdng ddng nha't cua tdng thi ddng chSt theo tifiu thiic nghifin curu.
b. Nghifin ciru ban chat cua hifin turong
c. Nghifin curu c ic dac trung cua toin bQ hifin tiling nghifin ciru.
*d. Ca a, b, c.
Cdu 19: Phdn td thd'ng ke Id phumg phdp:
a. Phan tfch mdi lifin hfi giOa cAc hifin tuong kinh tfi' - xa hdi.
b. Nghifin cuu cii chung va cai rifing mdt cich kfi't hop.
c. Nghifin ciru kfi't ca'u tdng the.
* d. Ca a, b, c.
Cdu 20: Kit cdu tdng th i cho ta thdy.

a. Biiu hifin tSm quan trong cua tirng b(> phan trong tdSng thi.
b. Biiu hifin ty trong cua timg bd phan trong tdng thi.
c. Biiu hifin tSm quan trong cua toin bd tdng thi trong nghifin ciru thd'ng kfi.
* d. Ca a v i b diu diing.
e. Ca a, b vi c diu ddng.
Cdu 21: Trong cdc cdu sau ddy chi tiiu Id:
13
Dai hoc Ngoai thirong
Bookbo oming
a. Quan he so sinh gitta gii ck cic mfit hing gitta cic thj trudng.
b. Gii ci gitta cic mit hing tai cic thj trudng khic nhau.
c. Tdng gii tri cua tit c i cic mit hing khicnhautrtn mdt thi trudng.
d. khdng diiu nio trong cic sO trtn li ddng.
*e. b v ic.
Cdu 22: Sd'cdng nhdn trong hap ddng cua mdt cdng ty ky v$o ngdy 01/02/1995 kd
300 cdng nhdn. Do ytu cdu cdng vitc ngdy 01.3 cd thim 30 ngudi nSa duerc ky hap
ddng. Ting sd cdng nhdn trong 2 thdng cua Cdng ty Id:
a. 330 ngudi
b. 630 ngudi
* c. Khdng t(nh dupe
Cdu 23: Trong cdc sd litu sau, s6 tiiu ndo Id tuong ddi ddng thdi
a. Gii ving thing 3 ting 10% so vdi thing 2
* b. Gii ving thing 3 ting 110% so vdi thing 2
c. Gii ving thing 3 thinh phd Hd Chf Minh bang 100% so vdi H i NQi.
d. Gii ving thing 3 d Thinh phd Htf CM Minh cao hon 10% so vdi Hi Ndi.
Cdu 24: Trong cdc sd sau ddy sd ndo Id tuong ddi khdng gian.
a. Gii ving thing 3 d Hi N$i thip hon 10% so vdi thinh phd Hd Chf Minh.
b. Gii ving thing 3 thip hon 10% so vdi thing 2
* c. sd nam d ldp cic ban bing 120% so vdi sd ntt trong cDng Idp.
d. Khdng cd sd nip trong cic sd trftn li sd tuong ddi khdng gian.

Cdu 25. Do tinh chat khd khdn d a cdng viic, tiin luong ngdy cdng cua cdng nhdn
trong mdt Cdng ty tdng 300%. Sau khi cdng viic kit thtic, tien luong ngdy cua cdng
nhdn gidm 75%. San cd k it ludn gi.
*a. Cdng nhin trong COng ty dupe nhin mtfc luong ban diu.
b. Sd lupng dupe ting 16n do cdng vite khd khin ft hon muc luong giim xudng khi
cdng viftc kd't thuc.
c. Sd lirong dupe ting ten do c6ng vjec khd khin nhidu hon mure luong giarri xudng khi
c6ng viCc ke't thuc.
d. Khdng didu nio ddng ci.
Cdu 26: Nhuoc diim cua sd binh qudn Id:
a. Niu lftn mire dd dai difin cua tdng thi theo md thiic nio d6.
b. Mang t(nh tdng hpp vi khii quit cao.
* c. Rit nhay cim vdi cic lupng bie'n dot xui't.
d. Khdng nhay cam vdi cdc lir<?ng bifin di)t xuat.
Cdu 27: Cdc ban da cd 2 cdng thfrc tinh sd tinh gia quyen nhu sau
Ex,F,
x = j-p 0 ) x = Zx,F, (2)
Hai cdng thtic niy dua ra cung mdt ket qua
14
Dai hoc Ngoai thuang
Bookbooming
a. Cung dd tfnh sd blnh quftn.
■ b. Quy£(i sdtrong (1) biifu hifin bfing sd tuyfit ddi. (2) bi£u hifin sd tuong ddi'. Do vfiy
thirc'cha't 1£ mOt.
c. Sai, hai cOrig thdrc nfty khfing cdng kfit qui.
d. Quy£n sd trong (1) bi£u hifin bing sd tuong ddi, trong (2) bifi'u hifin bang s6 tuyfit
ddi, trong (2) biiu hifin bing sd tuyet ddi do vfty thuc cha't lk rruM.
Cdu 28: Cd cdng thirc tinh sS binh qudn d ltu h o i nhusau:
x _ ~ i &
X " Id/x.Jd ,

trong cOng thuc n&y d,
a. 1.4 sd tuyfit ddi
b. La tdng luong bifi'n tifiu thuc.
* c. Bife’u hifin kfi't ca'u cua tdgn luong bifi'n tifiu thirc theo tifiu thurc nghifin ciru,
d. KhOng c6 difiu n&o 6 trfin li dung.
Cdu 29: Sd binh qudn cdng duoc dun de tinh
a. Sd binh quin cua nhung luong bifi'n cd quan hfi tdng
b. Sd binh qudn tCr day sd phan phdi
c. Sd binh quftn cua cdc sd binh quan td
d. Tat ca c ic difiu tren Id ddng.
Cdu 30: So binh qudn cua nhBmg luong btfn cd quan he td'ng.
a. Sd binh qufln cua nhftng luong bifin cd quan hfi tdng.
b. Sd binh quan tiir day s6 phan phdi.
* c. Sd binh quan cua cac sd binh quan td.
d. KhOng di£u ndo b trfin 14 ddng.
Cdu 31: Nhuoc dtfm cua Me la:
a. Sau bang, bii trir chfinh lfich gitta cdc lUQtng bifin
b. Chju anh hucmg cua cdc luong bifin dQt xua't.
* c. kem nhay bfin vdi su bifin thifin cua tifiu thirc
d Chi tinh vdi tdng the it dcrn vi.
Cdu 32: Qua dieu tra chi tieu tai mdt khu ph6 cd 200 ho gia dinh. Ngudi ta thu
duoc Me = 1 trieu ddng/ thdng. Sd tien tren cd y nghia gi?
a. Binh qudn mdi hO chi tifiu 1 trifiu ddng/thdng.
b. Da sd cac h6 gia dinh chi tifiu 1 trifiu ddng cho mdi thdng.
* c. 50% hd gia dinh chi tifiu trfin 1 trifiu. dOng / thdng trb lfin vi 50% hfi gia dinh cd
mire chi tifiu 1 trifiu ddng/thdng trd xudng.
d. Chua thfi’ kfi't luan du<?c gi.
Cdu 33: Uu d iim cua trung vi
a. San bang cua luong bifin
b. Bifi’u hifin mire do phd bifin nha't cua hifin tuqmg.

c. Nhay cam vdi sir bifi'n thifin cua tifiu thuc nghifin ciru.
15
Dai hoc Ngoai thirong
Bookbooming
* i Loai trit frih hiring cua hhBng luong biffn dQt xua't.
Cdu 34: Trong cdc cdu sau, cdu ndo khdng ddng vi' s6 tuyit ddi.
a. Sd tuyet ddi phin M i quy mb khdi lining cua hien tutjng tai nhflng thdi di£m nha't'
dinh.
b. Sd tuyet ddi phin 4nh quy mOi kh6i lu<?ng cua hien tuqmg trong mQt dd dii thdi gian
nha't djnh.
* c. Sd tuyet ddi cho ph£p di sau phan tfch bin chat, dac didm cua hien tuqmg.
d. Tat ca nhflng didu tren dSu diing v i sd tuyet ddi.
Cdu 35. Khi xdc dinh Me trong tdp hap sti lifu, kiin cdn liin hdnh Id:
a. X4c djnh sd ddng dr vj tri chfnh gitta trong tap h<flp sd lieu dd.
b. Xdc dinh xem sd luting don vi trong day sd 1& chin hay le.
c. Xac djnh xem tinh Me theo c6ng thtic don gisin hay cOng thuc cho day sd phan t6.
* d. Sap xdp day sd theo thu tu tang din hoac giim din.
Cau 36: Me chfnh ia lu^ng bi£n
a. 6 vj tri chfnh gitta trong mQt day sd bit ky.
*b. Cua duqfc 6 vj tri chfnh gitta cua day sd luqmg bie'n.
c. C6 sd ldn lap nhieu nha't trong day sd
d. KhOng c6 didu n&o d tren 1& dung
e. Ci a vi b ddu dung.
Cdu 37: C hiiu cao trung binh cua thanh niin V iit Nam Id 168, dd lich chudn Id
10cm trong khi khdi luong binh qudn Id 57kg dd Itch chudn Id 5kg anh chi cd kit
ludn gi?
a. Bi^n thien cua nam vd chidu cao vi can n$ng nhu nhau.
* b. bi^n thien vd chidu cao nhidu hon vd can nang
c. Bidn ddng vd chidu cao cua nam ft hon bidn dOng vd can ndng.
d. Chua kdt luftn duoc.

Cdu 38. Trong nhung chi tiiu do dd biin th iin dudi ddy, chi tiiu ndo cho phip so
sdnh su bii'n thien cua nhiing hien tuong khde nhau.
a. Khoing bie'n thien
b. Phirong sai.
* c. He sd bidn thien.
d. Dd lech chudn.
Cdu 39: Trong mdt cudc dtfu tra chon mdu thi, ngudi ta trich duoc h i sd bii'n thiin
cua tiiu thicc dang nghiin cdu Id 0,45 hay Id 45%. Anh chi cd kit ludn gi?
a. Co the’ ddng sd binh qudn thu dir<?c qua didu tra d6.
* b. Khdng nen diing sd binh quan d6.
c. Chua kdt luftn du<?c.
d. Ca b va c ddu diing.
Cdu 40: Trong cdc cdu sau cdu ndo ddng.
a. Sd binh quan phdn Snh mure d6 dai didn cho tdng the' nghien cuu
16
Dai hoc Ngoai thirong
Bookbooming
b. So b'mh quan li inut do <lai didn theo mOt tidu thiic nio do cua cic don vi trong tOng
the’ gOm.nhi&i don vj cung loai.
c. 56 binh quin mang tfnh chit tdng hop va lchii quit.
d. Tit ca cac didu trdn d£u ddng.
*e. b vi c.
Cdu 41: Chon cdu trd Idi dung trong cdc cdu sau
a. S6 binh quin bidu hidn mile do ph6 bien nha't cua t6ng the theo mot tieu ihitc nio
do.
b. SO' binh quin phan anh mire dO dai dien cua tdng the.
c. Cii a va b dfiu diing.
*d. Ca a va b ddu sai.
Can 42: Chi nen tinh sd'binh qudn trong td’ng the ddng chd't vi:
a. Trong tdng the’ ddng chit khong c6n su khic bifet vi.

b. Cac don vj trong tdng thd ddng chat gidng nhau vd loai hinh trdn tidu tlu'rc nghidn
cihi.
* c. Mat luong cua cac don vi trong tdng thd d6ng chit gidng nhau.
d. Ca a, b vi c.
Cdu 43. Can van dung ket hap siib inh qudn chung v«i so hinh qudn to vi
a. Cho phep nghien curu cai chung va cai rieng mot cach ket hop.
*b. So binh quan chung phan anh mure dd dai didn cho toan bO tdng thd, blnhquan
16 phan inh nuic do dai didn cho timg bO phan trong t6ng thdi do vay cung phii nghidn
cuu.
c. Nghidn curu sO' binh quin td cho phep thiy duoc die trimg ciia tirng td vi cua toin bO
tdng thd.
*d. a vi b.
c. a, b va c.
Cdu 44: Tdc dung cua sd'tuyet doi la:
* a. Phan inh tinh hinh thuc td'cua hidn tuong nghidn cuu.
b. Di sau nghidn ciru thuc trang cua hidn tutyrig nghidn curu.
c. Bi£u hidn suphit tridn cua hidn tuong qua thcri gian.
d. a va b.
c. ca a, b, c.
Cdu 45: Me la mire dd (M o?)
a. Nam o vi trf cao nha't cua ducmg cong tin sO' tfch luy.
b. La mire do trung tam cua tdng thd theo mOt tiiu thuc nio.
*c. Li mure do phd bid'n nhat cua tdng thd theo tiiu thi'rc nio do.
d. Ca a, b, c.
Cau 46: Nghien ciru cdc chi tieu do dd bien thii'n cho thd'y duoc,
a Do phan tin cua luong bid'n v6i sO' binh quin cua chung.
b. Do dong ddu ciia tdng the* theo tiiu thi'rc nghidn cihi.
Dai hoc Ngoai thircmg
Bookbooming
c. Dac diem phan phdi cua tdng the theo tifiu thirc nghien cuai.

*d. CA a, b. ‘c dfiu dung.
Cdu 47: \ftld:
a. Mtic dp ph6 bie'n nha't cua tdng the theo nipt tieu thilc nghien cihi nAo d6 .
b. Mire dd trong t&m cua tdng th£ theo mpt tieu thi'rc nao dd.
c. Lucmg bie'n cua don vi d vj trf chfnh gitta trong tap hop sd lieu day s6 ltrpng bie'n.
d. Ca a, b, c.
* c. b va c.
Cbwmg V
Cdu 48 Du&ng b iiu d iin mdi liin h i (hue t f giua tiiu thuc nguyin nhdn Fa tiiu
thuc k it qud duoc goi Id du&ng:
a. Dudng h6i quy If thuyfit.
* b. Du&ng hPi quy thuc nghifim
c. Dudng h6i quy tuyfi'n tfnh
d. Dudng phi tuyfi'n tfnh
Cdu 49: Sau khi xdc dinh duoc ptiuong trinh hdi quy chi tiiu ndo phdn anh cu&ng
d6 cua mdi quan h i.
a. He s6 tuong quan
b. Ty sd tuong quan
c. H6 sP' tuong quan
*d. CA a vA b dfiu dung
Cdu 50: Ty sdiuong quan duoc xdc dinh dua trin.
a. Ty s6 giua phuong sai chung vA phirong sai phan anh dp bien thien cua tieu thirc ke't
qua do anh hudng cua tieu thirc nguyen nhAn.
b. Ty sd gitta phuong sai ph&n Anh dp bie'n thien cua tieu thirc kfi’t qua do anh hudng
cua tif u thirc khic ngoAi tieu thirc nguyen nhan dang nghien ciru vi phuong sai do Anh
hudng cua tieu thirc nguyen nghan dang nghien ciru.
c. Ty sd gitta phirong sai do anh hudng cua cac tieu thirc nguyen nhan ngoai tieu thuc
nguyen nhan dang nghien cihi vA phucmg sai chung.
*d. Ty sd gitta phuong sai do anh hudng cua tifiu thirc nguyfin nhan dang nghifin ciru
vi phirong sai chung.

Cdu 51. y nghia cua he sd hdi quy
a. Phan anh anh hirdng cua cac tifiu thirc nguyfin nhan khac dfin tifiu thuc kfi't qua
b. Phan Anh Anh hudng cua tieu thuc nguyen nhan dang nghien cthi dfi'n tifiu thirc kfi't
qua.
c. Phan Anh dp ddc cua dirdng hdi qiiy ly thuyfi't
*d. CA b vA c dfiu dung
Cdu 52: Trong nhirng cdu du&i ddy, cdu ndo Id tdc dung cua day so thdi gian.
a. PhAn anh bifi'n dpng cua hifin tirpng qua thdi gian.
b ncn lfin xu the bifi'n dpng cua hifin tupng.
18
Dai hoc Ngoai thmyng
Bookbooming
c . Dir doSn mufc. dd.tutmg laicua hiftn tiling.
*d. TSit ak c&c cSu trin.
Cdu 53 Mdt Cdng ty duac thin h l$p tic ndm 1987, ba cdng ty khdc sdt rihdp vio
cdng ty, tdng v6n luu ddng cua cdng ty trong sud't thdi gian dd n hu sau (dd bd lam
phdt).
Ndm 87 88 89 \ 90 91 92 93 94
Von luu ddng 200 220 300 370 400 1200 1250 1400
Vd'n luu ddng cua cOng ty trong 9 nSm qua li
a. 400 triiu ddng
b
*c. Khdng nin tlnh cho sud't khoang thdi gian d6.
Cdu 54: Trong nhung chi t iiu sau ddy, chi tiiu ndo phdn anh luong tdng (giam)
tuyit ddi
a Nam 1994, vd'n luu d$ng cua cdng ty blng 150% so vdi nim 1992
b. Nam 1994, vd'n luu ddng ciia cdng ty tang 50% so vdi nam 1992
*c. Binh quin mdi nSm v6'n luu ddng ciia cdng ty ting 24%
d. Nam 1992 vdn luu ddng cua c6ng ty ting 200 triftu so vdi nSrn 1992.
Cdu 55: Tit thdng 2/1995, do nhu cdu cdng viic, cdng ty ky hap ddng thim vdi mdt

sd cdng nhdn. Ting sd cdng nhdn duac Ifcjf hop ddng tdng thim 30% so vdi sd' cdng
nhdn khi ky. Cud'i ndm do khd khan v i tdi chinh, cd mdt sd' cdng nhdn phdi tqm
nghi viic. So cdng nhdn bay g id giam 30% so vdi trudc khi cdng ty gdp khd kh in.
anh chi cd ket ludn gi?
a. Sd' cdng nhan co viic lam trong cdng ty bay gid diing bang sd ngudi trong hop ddng
trudc.2/1995.
b. Sd' c6ng nhftn trong c6ng ty bay gift nhiiu hon sd' cdng nhan trudc 2/1995
*c. Sd' cdng nhan trong cdng ty bay gift ft hon sd cdng nhSn trudc 2/1995
d.‘ Chua the' ki't luan duoc gi vi thii'u sd' liiu
Cdu 56: Tdc dd tdng (giam) binh qudn Id:
a. ty sd' gitfa luong tang (giam) dinh gd'c vdi mire dd ky g6c cd' dinh.
b. Ty sd' gifla luong tang (giam) tuyit ddi binh quan vdi mite dd binh quan
*c. Li chi tiiu tuong ddi noi ldn nhjp diiu tang (giam) dai difin trong mdt thdi ky nha't
dinh
d. ca a v& c diu ddng.
Cdu 57: T6c dd phdt trien id
a. Sd' tuong ddi ddng thSi.
b. Phan dnh xu hudng cua hiin tuong qua thu&i gian.
c. La chi tieu tuong ddi ndi len nhip dd tang giim cua hiin tucmg qua mdt thdi ky nhi:
dinh.
*d. Ca a v& b diu dung.
Cdu 58: doanh thu cua mot ciia hdng tit 89 -95 nhu sau;
19
Dai hoc Ngoai th ifan g
Bookbooming
1 NL.i
.
89-
90 91 •

92 ■
.
9 4 ' . , 95
| DT
• 300
320
250’
420
500 • §00 •
- . .1
■ 310 •
L*.

-T6c d(J phit triin binh quftn trong thdi ky dd li:
V l.0 3 3
V l.0 3 3
*c. Khdng n6n tinh
Cdu 59: B iiu k iin ddu tien khi vdn dung cdc phuong phdp b iiu hitn xu hudng phdi
triin qua thdi gian Id
a. Sip xd'p day sd theo thu tu tang (giam) dan
b. Dim bio tfnh chat so sinh duoc giOa c&c mire dd trong day sd.
c. Loai bo nhttng nhan td ng5u nhifin
d. Khdng cd didu nk> a tren
Cdu 60: sau khi sit dung phuong phdp hdi quy, anh (chi) cd duffc hai hang sd'sau:
Yx = a + bx (1) x IS tieu thuc nguyen nhan
Yx = al + bl (2) t la thdi gian
trong cac cdu sau cdu n&o dung
a. (1) la ham xu the', (2) ia ham sd biiu hien mdi lien he.
b. (2) 14 him xu the", (1) ia him sd biiu hien mdi lien quan
*c. C4 (1) v i (2) diu bie’u hien mdi lien he cua hien ttftpig

Cdu 61: Muc dich cua cdc phum g phdp biiu hifn xu hudng phdt triin cua h iin
tuong Id:
a. Dua ra duoc tdc dd phit triin trogn tirng thdi ky.
*b. Loai bd tic ddng cua cic nhan td ngSu nhien
c. Dam bao tfnh so sinh duoc cua c&c mure dd trong day sd
d. Nghifim ctru to'c dd tang giim qua t(mg thdi ky.
Chuong VII
Cdu 62: Trong nhung cdu sau ddy cdu ndo ddng:
a. Sd tuong ddi la chi sd
*b. Chi sd ia sd tuong ddi.
c. Chi sd biiu hien quan he so sSnh giffa 2 hien trnjng c i biet.
d. Tat ci c ic cau tren diu ddng.
Cdu 63: Ddc diim cua phuong phdp chi sd'ld:
a. Khi cd nhiiu nhan td cung tham gia tfnh todn chi sd, chi cd mdt nhan td nghien ciru
dugc cd dinh, cic nhan td con thay ddi.
*b. Khi cd nhiiu nhan td cung tham gia tfnh toin chi sd, mdt sd nhan td duoc cd dinh
mdt sd cdn lai thay ddi.
c. Khdng diiu nk> tmg sd cac diiu tren 14 dung.
Cdu 64: Trong cdc cdu sau, cdu ndo la ddng.
a. Chi sd chung la sd tuong ddi.
b. Chi sd ca the’ ia sd tuong ddi
20
Dai hoc Ngoai thirong
Bookbooming
*c. Ca crii -s6 ghung va chi sd c i the diu li s6 tuong ddi.
d. Khdng cd loai chi sd nio a trin li sd tuong ddi,
Calt 6S:Nhupc diim cua cdng thiic tinh chi sd'phdt triin gid cd hi4n dang ding. Id:
a. Chinh lich tuyit ddi gitta gid tri vi m3u sd phin inh sd tiin gii djnh ngirdi din phai
tra thim do tra thim (hoic tii't kiim) 6 ky bio cio do ting gii hoic giim gii.
b. Chua phan inh duoc bii'n ddng cua gii ca.

* c. Chira hoin toin loai trir dir^c anh hucmg cua khdi luong hing hoi tiiu thu, ngudi
la khdng cd dinh quyin ssd a ki bio cio.
d. Ca ba va c diu ddng.
Cdu 66: Tai sao khi tinh chi sd phdt triin cho kM i luong hdng hod tiiu thu, ngudi
la khdng cd dinh quyin sd'a ky hdo cdo.
a. Ni'u di thdi ky quyin sd 6 ki bio cio?chinh lich giffa tif sd vi miu sd khdng phin
anh sd tiin ngudi dftn phai tra thim dii mua hing hoi b kl b io cio.
b. Thdi kii quyin sd a ki bio cio khdng phin inh dir<yc biin dQt riing biit cua luqmg
hing hoi tiiu thu
c. Thdi ky quyin sd 6 ky gdc loai trir duqrc anh hudng cua gid ca dfin biin ddng cua
luong hing hoi tiiu thu.
Cdu 67: Khi dung phucmg phap chi sd'binh qudn d i tinh chi sd phdt triin cho gid ,
quyin sd cua chi sd dd.
a. Luong hing tiiu thu ky gdc.
b. Luong hing hoi tiiu thu ky nghiin ciru
c. Mure tiiu thu hing hoi ky gdc
* d. mure tiiu thu hing hoa ky bio cao.
Cdu 68: Tai sao khi dung phuong phap chi sd binh qudn d i tinh sd phdt triin cho
khdi luong hdng hod tieu thu, ngudi ta ddng chi sd binh qudn gia quyin md khdng
dung chi sd'binh qudn dieu hod.
a. Vi chi sd binh qudn diiu hoi khdng cho mdt dip sd.
b. VI chi sd binh quin cdng gia quyin thuin tiin hon cho trudng hop niy.
* c. Vi quyin sd sir dung khi tinh chi sd nay li mdt sd liiu gidi djnh.
Cdu 69: K hi ddng phuong phdp chi so binh qudn d i tinh chi sd phdt triin, cho khdi
luong hdng hod tieu thu, ta cd 2 cdng thuc sau:
a. Trong cdng (hire (1) quyin sd l i

b. Trong cdng thuc (2) quyin sd IS

Cdu 70: D i tinh sd binh qudn cua cdc chi sd cd t h i v i gid ta cd 2 cdng thftc:

, _ — Sm j — , ,, ,
_____
M — (2)
2 < 7 J V m / B ille d , w
a. Trong cong thiic (1 1 quyin so la
b. Trong cdng tlurc (2) quyen sd li
Dai hoc Ngoai thirong
Bookbooming
iiu 71: Khi tfch chi tiiu sd so sdnh gid cd giita 2 thi tnfdng A vd ft ta tu uuitg
quyin s i Id:
a. Kh6i litfjng hdng hod tifu thu dthj trudng A.
b. Khtfi iuc^ig hdng hod tiiu thu 6 thj tnrdng B,
* c. Tdng khoi lw?ng hdng hod tieu thu 6 ca 2 thj tnidng cua cung mi)t mat hdng.
d. Cd 3 phirong phdp diu diing.
Cdu 72: Ni'u tinh chi s i khdng gian ctyo khdi luong hdng hod tiiu thu trin 2 thi
tru&ng A vd B, quyin sd c6 t h i Id
a. gid ca cu#. tfrng mdt hdng b thj trudng A va B
h. Gid c6 djnh ciia tCmg mdt hdng do Nhd nude quy djnh.
c Gid binh qudn cua tung mfit hdng trfin 2 thj trudng
- d. Cd b vd c diu diing.
Cdu 73: Cd he thd'ng chi so nhu sau:
IZiq, SZnfl.
.22)31 _ J- 3i- . . Z U l
z z a ' S T a & i f k
Iq . Iq«
(I) (2) (3) (4)
'frong Jc» Z la ky hieu gia thdnh
q: KhO'i luong 'in phdm sin xudt ra
z. Chi so’ (I) piiiu dnh

b Chi s0» {?.) phan dnh
c.
.
Chi sCi (3) phan dnh


c1 f Thi sd (4) phdn dnh
Ota 74; Cd hi tiling chi sd nhu
SZ,q, IZ a ,
!Z ,q , _ . ZflL_ IflL . S a i
Z Z/l: SZqQit * 2-%,
I q i ; I q 0
0 : (2) (3) (4)
a. Chinh l£ch tuyfit ddi giua tu vd m4u (1) phan dnh
k Chcnh ICch tuyet ddi giOra tu vd mdu (2) phan dnh
: Chinh lech tuyit ddi giQa tur vd mSu (3) phdn dnh
(1. Chfinh lech tuyftc ddi giQa tu vd mdu (4) phan dnh
Dai hoc Ngoai thirong
Bookbooming
Cau 7;>) eh; s&cSu thir]h Jkha.bifin bao g6m bie'n dfing cua:
a) Bin than tiiu thiic nghien cthi.
B) Ice't ca'u tong thi theo tieu thiic nghien cihi.
c) Bie'n d6ng cua tdng luong bie'n tieu thtic .
d) Tat c i cic tieu thiic tren diu khftng ddng .
* Ca a va b
Cau 76) Trong cdc cau dudi day , cSu nio li tic dung ciia pp chi sS'.
a) Biiu hien bi£n d6ng cua hien tuong KT-XH theo hoi gian .
b) Biiu hien bi£n dflng cua hien tugng KT-XH qua tumg dia diim khic nhau .
c) phan tfch mdi lien he giffa cic hien tircfng .
d) Ca a vi b .

e) Ca a, b v i c .
Cau 77) Khi xay dung chi s6 lien hop cho gia ca quyin sd duoc chon li khdi luong
hing hoa tieu thu v i:
a) Giup cho viec chuyin dong tii tdng thi bao gdm cic phin tir c6ng duoc vdi rihau
thanh cic phan tir khOng c6ng ducrc vdi nhau .
b) Biiu hien tim quan trong v i luoung tieu thu cua ttrng mat h ing.
c) Gitip cho viec chuyin gii c i tflmg mit hing vdn khOng true tiip cOng lai vfli nhau
thinh dang tdng g ii ca c6 the true tie'p cQng ducrc vdi nhau .
d) Ca a vi c .
e) Ca d vac .
Cau 78) khi xfty dung chi sO' lien hop cho khdi lugmg hing hoi tieu thu quyin sd duoc
chon li gii ck don vi hing hoi v l:
a) Gii c i biiu hien ty trong mile tieu thu cua tirng mit hing trong tdng miic tieu thu .
b) Giup cho viec chuyin tir tdng thi bao gdm cic phin tu kkhdng cdng duoc vdi nhau .
c) Gii ca hing hoi khic nhau c6 inh hucmg deh luong hing hoi tieu thu .
d )C i a. b, c.
e) Ci b vi c .
Cau 79) Chi soo ci'u thinh p /a.
a) Bien ddng cua bin thin tieu thiic dang nghien ciiu .
b) Bie'n ddng cua tdng luong bi£n tieu thiic .
c) Bie'n ddng cua ke't ca'u tdng thi theo tieu thtrc nghien ciiu .
d) Bie'n ddng cua tit c i cic nhan td tren .
e.) Ca b va c .
Ciu 80) Chi s6' anh hu&ng ket ciu p/a.
a) Bie'n ddng cua bin than tieu thiic dang nghien ctiu .
b) Bie'n ddng cua tdng luong bie'n tieu thiic .
c) Bie'n ddng cua ke't ca'u ttdng thi theo tieu thiic nghien ciiu .
d) Bie'n ddng tit ca c ic nhin td tren .
e) Ca b va c .
2 ’

Dai hoc Ngoai thuang
Bo okbooming
in)
< j}2 81) Thf n&o li \i ( k l<i(?ng ?
a) Vitc tfnh toAn cAc tham s6 dAc (rang cho t<$ng th&mAu .
b) Vifp tfnh to An cAe tham $6 dac tnrng cl» tdnh th£ chuftg
c) Tit c&c hi£u bie't vi tham s«5 ddc tnmg cho tdng th< £hung suy lUftd ra th&rth cAe
thin t4af (h4 m4u
d) TCr c6c hhi& bi£l vd tham s6 dac tnmg cho tdng thfmiu suy ra th&nhcAc tham sd
cho t6ng th£ chung.
Dai hoc Ngoai thirong
Bookbooming
TAI L itl) O N TUI MON LY THUYHT THONG KE
PH A>^E Hav diin dung, sai cho cic ciu sau;
Caui. Khi phin id ilieo liiu thiic thu6c tfnh ,cii mAi loai binh luan lufln lu6n
hinh thanh ndn m6i 16. (d)
Cflul M0 duac dung dd' ndu Idn dac tnmg cua day sd phdr. phdi khi day s<5 co
nhidu lirgng bien cd tin sd bang nhau hoac xflip \i nhau. (s)
Can3: ME rat nhav cam vdi nhtfng luong bi£n dot xuat trong day sd.
Cflu4: Nghidn ciiu hd sd tuong quan c6n cho phep thay d'joc vai tro cua tir.ig tidu
thiic nguvdn nhan ddi vdi tidu thiic kdt qua. (d)
C5u5: Nghien cihi gia trjtuydl dodi cua l%tfing hoSc giam chinh l& su van dung
kdt hop s6’ tuong'd6'i vh sd tuydt d6'i. (d)
C;u6: Loai bo ydii id ngiu nhidn ra khoi day s6 thdi gian khfing phai nhidm vu
cua cac phuong phap bidu hidn xu hudng phdt tridn qua thdi gian. (s)
Cdu7: C6ng thuc tinh chi sd' gid theo phucmg phap chi s6 lien hop dang diing hien
n r.1 chira lor: trir duoc hoan loan anh hucmg ciia khdi luong hans hoa den bien
dCmgcuagiUca. (s)
C1U18: Quvin sd irong cting thiic chi s6 binh quan cdng dd’ tinh chi s6 gia hang
ho6 tidu thu la mdt chi tidu cd sdlidu (hue id'. (s)

Cau9: Phan t6 ihong kd giup cho vide nghidn ciiu cdi chung cai rieng md: each
kdt hop. (d)
Cftu 10: S6‘ tuydt ddi thdi di^m phan anh sy ifcli luy vd luong cua hidn tuong irong
sudi thdi gian nghidn ciiu (s)
CSu 11: S6 tuvdt dd'i thdi ky phan dnh trangthui cua hidn tuong nghidn ciiu trong
m6t thdi didm nha't djnh. (s)
Cau 12: Phuong phap binh phucmg cac chdnh lich giiia cac gid tri ly thuydt vd cdc
gid tri thuc td' cua bid'n phu ihuGc. (d)
Cdu 13: Ddi vdi day sd thdi did’m c6 khoang cdch thdi gian bang nhau .Miic dd
binh qudn theo thdi gian chfnh la binh qudn cua timg nhdm hai miic dd . (d)
Cdu 14: Phuong phdp chi sd Id phuong phdp phdn t/ch mdi lidn hd .cho phdp
nghidn tiiu cdi chung vd bO phan mdt cdch hop Vj. (d)
Dai hoc Ngoai thirong