Chapter 1 A Review of Basic Concepts (Optional).

Chapter 1 A Review of Basic Concepts (Optional)

Section 1.1 Statistics and Data

Section 1.2 Populations, Samples, and Random Sampling

Section 1.3 Describing Qualitative Data

Figure 1.1 SAS bar graph for data on 22 aphasiacs
Copyright © 2012 Pearson Education, Inc. All rights reserved.

Figure 1.2 SPSS pie chart for data on 22 aphasiacs

Section 1.4 Describing Quantitative Data Graphically

Figure 1.3 Relative frequency distribution: IQs of identical twins

Figure 1.4 Probability distribution for a quantitative variable

Figure 1.5 MINITAB stem-and-leaf plot for EPA gas mileage

Figure 1.6 SPSS histogram for 100 EPA gas mileage

Section 1.5 Describing Quantitative Data Numerically

Figure 1.7 MINITAB printout: Describing the no-show data, Example 1.6

Section 1.6 Normal Probability Distribution

Figure 1.8 A normal probability distribution

Figure 1.9 Several normal distributions with different means and standard deviations

Figure 1.10 Normal probability distribution m = 50, s = 15

Figure 1.11 A distribution of z scores (a standard normal distribution)

Figure 1.12 Standard normal distribution: m = 0, s = 1

Section 1.7 Sampling Distributions and the Central Limit Theorem

Figure 1.13 Sampling distributions for y based on a sample of n = 25 measurements
_ Copyright © 2012 Pearson Education, Inc. All rights reserved.

Figure 1.14 Sampling distributions of x for different populations and different sample sizes

Figure 1.15 A population relative frequency distribution and the sampling distribution for y

Figure 1.16 The sampling distribution of y

Section 1.8 Estimating a Population Mean

Figure 1.17 Sampling distribution of y

Figure 1.18 Locating za/2 on the standard normal curve

Figure 1.19 SAS descriptive statistics for n = 50 sample attention times

Figure 1.20 The t.025 value in a t distribution with 4 df and the corresponding z.025 value

Figure 1.21 MINITAB descriptive statistics and confidence interval for Example 1.12

Section 1.9 Testing a Hypothesis About a Population Mean

Figure 1.22 The sampling distribution of y for m = m 0

Figure 1.23 Location of the rejection region for various alternative hypotheses

Figure 1.24 Testing Ha: m >m 0 using a p-value

Figure 1.25 SPSS printout for Example 1.14

Figure 1.26 Rejection region for Example 1.15

Figure 1.27 SAS output for testing benzene mean

Section 1.10 Inferences About the Difference Between Two Population Means

Figure 1.28 SPSS analysis for diet study, Example 1.16

Figure 1.29 SAS output for Example 1.17

Figure 1.30 Rejection region for Example 1.17

Figure 1.31 Rejection region for analysis of data in Table 1.17

Figure 1.32 MINITAB paired difference analysis of data in Table 1.17

Section 1.11 Comparing Two Population Variances

Figure 1.33 An F distribution with 7 and 9 df

Figure 1.34 An F distribution with 7 and 9 df: a = .05

Figure 1.35 Rejection region for production example F distribution

Figure 1.36 SAS F-test for the data Table 1.19

Chapter 1 A Review of Basic Concepts (Optional).

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Chapter 1 A Review of Basic Concepts (Optional).

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