Chapter 1
A Review of
Basic
Concepts
(Optional)
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Section 1.1
Statistics and
Data
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Section 1.2
Populations,
Samples, and
Random
Sampling
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Section 1.3
Describing
Qualitative
Data
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Figure 1.1 SAS bar graph for data on
22 aphasiacs
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Figure 1.2 SPSS pie chart for data
on 22 aphasiacs
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Section 1.4
Describing
Quantitative
Data
Graphically
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Figure 1.3 Relative frequency
distribution: IQs of identical twins
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Figure 1.4 Probability distribution
for a quantitative variable
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Figure 1.5 MINITAB stem-and-leaf
plot for EPA gas mileage
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Figure 1.6 SPSS histogram for 100
EPA gas mileage
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Section 1.5
Describing
Quantitative
Data
Numerically
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Figure 1.7 MINITAB printout:
Describing the no-show data, Example
1.6
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Section 1.6
Normal
Probability
Distribution
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Figure 1.8 A normal probability
distribution
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Figure 1.9 Several normal distributions
with different means and standard
deviations
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Figure 1.10 Normal probability
distribution µ = 50, σ = 15
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Figure 1.11 A distribution of z scores
(a standard normal distribution)
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