## Elementary Statistics

Twin Swallows, Wu Guanzhong (1919-2010)

### Unit 1: Inference

1. Significance

2. Generalization
• 2.1 random selection and random assignment 1 pc (zip html)
• 2.2 sampling distributions pc (zip html)
• 2.2 plots pc (zip html)
• 2.3 z-scores pc (zip html)
• 2.3 z-scores soln pc (zip html)
• 2.review UGA pc (zip html)

3. Estimation

4. Causation
• 4.1 observational study vs experiment pc (zip html)
• 4.1 calcium pc (zip html)
• 4.1 pecans pc (zip html)
• 4.1 marriage pc (zip html)
• 4.2 clinical trial (experiment) pc (zip html)
• 4.2 case-control study (observational study) pc (zip html)
• 4.review polio (experiment and ...) pc (zip html)
• 4.review polling (survey) pc (zip html)

### Unit 2: Comparing Groups

5. Comparing Two Proportions
6. Comparing Two Means
7. Paired Data: One Quantitative Variable

### Unit 3: Analyzing More General Situations

8. Comparing More Than Two Proportions
9. Comparing More Than Two Means
10. Two Quantitative Variables

cparrish@sewanee.edu