Tiểu luận kinh tế lượng điều tra ảnh hưởng của tiền chu cấp, tiền trọ, tiền ăn tới tiền đi chơi hàng tháng của sinh viên

TRƯỜNG ĐẠI HỌC DUY TÂN
KHOA QUẢN TRỊ KINH DOANH

BÀI TIỂU LUẬN
MÔN: KINH TẾ LƯỢNG
Đề tài: “ĐIỀU TRA ẢNH HƯỞNG CỦA TIỀN CHU CẤP, TIỀN TRỌ, TIỀN ĂN TỚI
TIỀN ĐI CHƠI HÀNG THÁNG CỦA SINH VIÊN”
GVHD : Nguyễn Lệ Quyên
LỚP : ECO 251D
SVTH :
1.Lê Thị Điểm : 172348319
2.Lê Thị Nga : 172348386
3.Trần Thị Mỹ Linh : 172348366
4.Nguyễn Thị Thùy Loan : 172348370
5.Phạm Thị Thu Trang : 172348454
6.Võ Thị Trang : 172359038
7.Nguyễn Thị Ngọc Bích Trâm : 172348449
8.Đào Trần Khánh Vân : 172348478
Đà Nẵng, tháng 5 năm 2013
MỤC LỤC
Mục lục 
Nội dung chính:
I.Vấn đề nghiên cứu
II.Bộ số liệu
III.Mô hình hồi quy – Kiểm định và khắc phục mô hình



 !
"
#$!%&' ()*(+,!-

. /0+,%123(45(61 -
7 ',8259:8;<
=#$!%&48>(6!
#$!%&%,1?
#$!%& /@,
#$!%&(/@',,%
Phụ lục
A85'
Tài liệu tham khảo7
I. Vấn đề nghiên cứu:
BCD,' /0+,CE(FCDGFCHFI4D9
,J!IC%@+,'4K%9GL985,D&
85,M%9GNO
II. Bộ số liệu :
P Q Q Q N N
RRRRR SRRRRR R 7RRRRR R R
RRRRRR -RRRRR R 7RRRRR R 
-RRRRR RRRRRR 7RRRRR SRRRRR R 
RRRRR -RRRRR RRRRRR TRRRRR R R
-RRRR RRRRRR -RRRRR RRRRRR R R
RRRRR RRRRRR R RRRRRR R R
-RRRRR RRRRRR RRRR RRRRRR R 
RRRRR RRRRR 7RRRRR ?RRRRR R R
RRRRR -RRRRR 7RRRRR SRRRRR R R
RRRRR RRRRRR <RRRRR RRRRRR  R
-RRRR ?RRRRR R 7RRRRR  R
RRRRR SRRRRR R 7RRRRR R R
RRRRR RRRRRR ?RRRRR RRRRRR R R
RRRRR RRRRRR RRRRR -RRRRR R R
RRRRR RRRRR R <RRRRR R R

RRRRR RRRRRR R <RRRRR  R
RRRRR -RRRRR ?RRRRR TRRRRR R 
RRRRR SRRRRR -RRRRR SRRRRR R R
<RRRRR RRRRRR 7RRRRR 7RRRRR  
?RRRRR RRRRRR 7RRRRR -RRRRR  
RRRRR RRRRRR 7-RRRR SRRRRR R R
7RRRRR -RRRRR R -RRRRR  R
<RRRRR -RRRRR <RRRRR RRRRRR R 
III. Mô hình hồi quy – Kiểm định và khắc phục mô hình:
A. Mô hình hồi quy:
1. Mô hình tổng quát :
PUVLOWVLOXQWVLOXQWVL7OXQWVL-OXNWVL<OXNWY

2. Giải thích các biến :
 =(61Z
Y : C%@+,'4KLB4Z%[O
 =%123(Z
• =%&2/*Z
K N\ B@4&
#4G
E
]^,8
Q

C,!_
E(
%[

W
C,!_E(C

C%@C
Q

C0DG
%[

M
C0DGC%@
C
Q

CH
%[

M
CHC%@
C
• =%&Z
K N\
` ,G
#4G
E
]^,8
R 
N

I ab a,! W[M
Ic$5d8
$2!HL!OC%
@

N

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3. Tiến hành xây dựng mô hình :
3.1 Mô hình gốc
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N -T7S -<<7- RT<S<T R7<-
N T??TS <-STR RRR?R RRRSR
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• Nhận xétZY52x8F8C,%E(H4
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3.2. Kiểm định sự phù hợp của mô hình hồi quy :
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3.3 Sự ảnh hưởng của biến độc lập vào biến phụ thuộc :
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C%@v+,'4K
3.4. Mô hình sau khi loại bỏ các biến không cần thiết :
7A/@DZ
j'!,5V5!!,Z
UUUUUUUUUUUUUUUUUUUUUUUUU
`.PVQQN
j'!,5j,5Z
UUUUUUUUUUUUUUUUUUUUUUUUU
PUVLOWVLOXQWVLOXQWVL7OXN
.'YV5YmnY'Z
UUUUUUUUUUUUUUUUUUUUUUUUU
PU7TTT???7WRR<7TTR<?XQMR-S-?RR7XQW?S-?-<7-XN
3.4.2 
NY(YYf,D,2YZP
Y5Z`Y,'.,DY'
N,YZR-[?[!YZ7ZR
.,!(2YZ
k2Y5'YD4,5'Z
f,D,2Y V5YmnY .jDD5D M.,' AD5
V 7TTT? ?-TST S<T?T RRR7T
Q RR<7R RR-<<R- <7<<SR RRR?
Q MR-S- R<-R M?-TS< RRR
N ?S-S <RT< ?7?-R RRR7
oM',DY RSRRTRY,Y(YY4,D R77S
p'YoM',DY R?SRR-.NY(YY4,D <RR7
.j5mDYDY''5 R-T?T8,8Ym5DYD5 <<<-

.!',DYDY' jW.q,DrDYD5 <7
`528Y255 MT<-?7s,,MtDYD <S<
uM',' ?R-S?NDMl,'5', ??RTT
AD5LuM','O RRRRRRR
Ý nghĩa :
M=

U7TTT?ZCK54J%@+,!1'4K%1
88c' D*E(+,,%48K54JH"2
7TTT?
M=

URR<7RZCD*E(+,,%HL!O%@4&K5
4J%@+,'4KHL!ORR<7R%@4&
M=

UMR-S-ZC54JH"+,'4KHL!O%@4&
C54J%@'w!LHOR-S-%@4&
MN

U?S-SZC54J%@+,'4K%14'4K%,
c/eKK2J,?S-S%
B. Kiểm định và khắc phục:
1. Kiểm định đa cộng tuyến:
NY(YYf,D,2YZQ
Y5Z`Y,'.,DY'
N,YZR-[?[!YZ7Z7T
.,!(2YZ
k2Y5'YD4,5'Z
f,D,2Y V5YmnY .jDD5D M.,' AD5

V TR<? S<TS? <RR RSST
Q ?S?- R?-R7 7<R7?- RRRR
N ?TR7S7 ST?S- S7?T RRRR
oM',DY R<77TY,Y(YY4,D S7?S<
p'YoM',DY R<RSS.NY(YY4,D <<T?-
.j5mDYDY''5 7S<-RT8,8Ym5DYD5 SS7S-?
.!',DYDY' -jW.q,DrDYD5 STT<<S
`528Y255 MS?-S<s,,MtDYD SSS-S
uM',' SRSNDMl,'5', <-
AD5LuM','O RRRRR
#BZs
R
Zo

UR
s

Zo

~R
g!,cu
'
USFRS
uL•F8MFM8OUF
,Eu
'
USFRSzuL•F8MFM8OUFUz:s
R
FE(3s



 VcJ/*%,1D,D5!
 Cách khắc phục Z
Ta thấy giữa 2 biến X1,X3 có sự tương quan chặt chẽ với nhau.
Mô hình hồi quy giữa biến X1 và biến X3.
NY(YYf,D,2YZQ
Y5Z`Y,'.,DY'
N,YZR-[?[!YZZ
.,!(2YZ
k2Y5'YD4,5'Z
f,D,2Y V5YmnY .jDD5D M.,' AD5
Q RT<TS RR<RR <R-7R RRR?
V R?R?T T-S7S -<?S?S RR?T
oM',DY RSS?Y,Y(YY4,D ?R7-
p'YoM',DY R-T.NY(YY4,D ?TT
.j5mDYDY''5 T-8,8Ym5DYD5 ?7<7
.!',DYDY' ??RjW.q,DrDYD5 ?7-RS
`528Y255 MTs,,MtDYD ???
uM',' T?RTNDMl,'5', TRT
AD5LuM','O RRR<??
- #BZs
R
Zo

UR
s

Zo

~R

g!,cu
'
UFT?RT
uL•F8MFM8OUuLRR-‚FOU7-
,Eu
'
UFT?RTzuL•F8MFM8OU7-Uz:s
R
FE(3s


43!9%,1b,Q4Q
 Biện pháp khắc phục : dùng biện pháp bỏ bớt biến
,c!8:IQcR
2
= 0.677171
,c!8:IQcR
2
=0.669383
,E0.677171 > 0.669383. nên ta loại biến X1 ra khỏi mô hình. Vì khi không có biến X1
trong mô hình thì mức độ phù hợp của mô hình hồi quy không tốt bằng việc không có biến
x3.
Mô hình hồi quy khi không có biến X1.
NY(YYf,D,2YZP
Y5Z`Y,'.,DY'
N,YZR-[?[!YZZ7
.,!(2YZ
k2Y5'YD4,5'Z
f,D,2Y V5YmnY .jDD5D M.,' AD5
Q MR-77S< RR<7T MSR7- R-R

N S???-T <RT <-? RRRRR
V -?RT TR? 7T7R RRR
oM',DY R<???Y,Y(YY4,D R77S
p'YoM',DY R<77SSS.NY(YY4,D <RR7
.j5mDYDY''5 7<???8,8Ym5DYD5 <-SR<
.!',DYDY' <jW.q,DrDYD5 <?S?
`528Y255 MR<?Rs,,MtDYD <<?-
uM',' RT?<-NDMl,'5', ?T??<?
AD5LuM','O RRRRR
#$!%&%,1+,!!IZ
NY(YYf,D,2YZQ
Y5Z`Y,'.,DY'
N,YZR-[?[!YZZ7S
.,!(2YZ
k2Y5'YD4,5'Z
f,D,2Y V5YmnY .jDD5D M.,' AD5
N ?S-?7 RS<? RR<?? RTS?
V ?-RRR <RST?S <TTT RRRRR
oM',DY RRRRRY,Y(YY4,D ?R7-
p'YoM',DY MRR7?<R<.NY(YY4,D ?TT
.j5mDYDY''5 7-T8,8Ym5DYD5 ???
.!',DYDY' -jW.q,DrDYD5 ?S<R-
`528Y255 M<S<7s,,MtDYD ??--
uM',' RRRR<NDMl,'5', <RT
AD5LuM','O RTS?7<
,cZ#BZs
R
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UR

s
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g!,cu
'
URRRR<
uL•F8MFM8OUuLRR-FFOU7-
,Eu
'
URRRR<{uL•F8MFM8OU7F-UzE(3s
R
f3!89%,1
2. Kiểm định tự tương quan:
=DY'M5mDY.YD,2V5DDY2,5`Y'Z
uM',' R<AD5uLFSO R<TT
ƒ'XoM',DY RR-77-AD5VM.,DYLO R<-R7
Y'j,5Z
NY(YYf,D,2YZoj.kN
Y5Z`Y,'.,DY'
N,YZR-[?[!YZ7Z-
.,!(2YZ
k2Y5'YD4,5'Z
ADY',!(2Y!''4,2Y2,YDY',2''Y5rYD5
f,D,2Y V5YmnY .jDD5D M.,' AD5
V ?<?-RT ?T<?SR RRSTT-< RTT
Q RRRR< RR-S-7 RR?T? RT?R
Q MRRR?TS R7?7 MRR?-T- RT7R
N MTS7?7? <TSR MR7T RSSS-

oj.kNLMO RR?SS R<?<S R7R?S R<TT
oM',DY RRRSTY,Y(YY4,D MRjM
p'YoM',DY MRR-.NY(YY4,D TS7SS?
.j5mDYDY''5 RST<R8,8Ym5DYD5 <7<
.!',DYDY' jW.q,DrDYD5 <7<7S
`528Y255 MT<7<Ss,,MtDYD <?<?
uM',' RR7R SNDMl,'5', T<7-T
AD5LuM','O RTT<-??
 ,EA•4,2YUR<-R7zRFR-Uz8c'  /@,D5!
3. Kiểm định phương sai thay đổi :
sYYD5'8Y,'Y'ZlY
uM',' ?<<AD5uLSF7O RR7??
ƒ'XoM',DY 7RSAD5VM.,DYLSO RRSR
.,2YY(2,Y 7R?AD5VM.,DYLSO R7
Y'j,5Z
NY(YYf,D,2YZoj.kN„
Y5Z`Y,'.,DY'
N,YZR-[?[!YZ7Z-
.,!(2YZ
k2Y5'YD4,5'Z
V522Y,DY'DYDY''5D'D5((YmD5!'(Yn,5
f,D,2Y V5YmnY .jDD5D M.,' AD5
V M-<<jWRT -jWR MR<R7 RS?7T
Q -7-7SS RS-RS SRRR-? RRT7
Q„ RR-<<7 RRSS RS<-<T R7R7
QXQ MR-TSS RR?<7 MS7<-S7 RRS<
QXN M?7-S<- S?S7 MR-SSSS R?TT-
Q MSRRS? -RTR MR<7R? R-7
Q„ RS?RT RTTS -<S7R RT
QXN << -TR<-S S?7 RR-R<

N M?TSjWR 7jWR MST<?T RR?SS
oM',DY R<RTT?Y,Y(YY4,D TSjWRT
p'YoM',DY RS?RS.NY(YY4,D -jWR
.j5mDYDY''5 RjWR8,8Ym5DYD5 7T-T?
.!',DYDY' RRjW.q,DrDYD5 7TT??T
`528Y255 M-<R<Ts,,MtDYD 7T<77?
uM',' ?<<NDMl,'5', TT<ST
AD5LuM','O RR7??77
a3EA•4,2YURRSRzRFR-K8c(/@',,%D5!

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Nội dung phiếu điều tra
CÁC KHOẢN CHI TIÊU HẰNG THÁNG CỦA SINH VIÊN TRƯỜNG
ĐẠI HỌC DUY TÂN
sGfKZ
IZ
`I(Z
tKZ
!Z
Vc/eKZ V/,c/eKZ
 V85KvZ
- C,%E(Z
- CDGLcOZ
- CHZ
- C%@Z
V…!@bDK+,9†
Tài liệu tham khảo
LOs5aGa3!
#2/*FaE"8KFRR
LOa\t,N5

=3(‡#2/*ˆ4I' D*…(+,(;!C!j4Yq'FaE#5,G4
#‰3FRR-
LO=)N/@s
s/Ih (;!C!j4Yq'FaE85,GŠ8^3FR