Chapter 14

1. Chapter 14 Inferential Data Analysis Conducting & Reading Research Baumgartner et al

2. Two Independent Groups t Test • Draw two samples from same population and administer different tests • Draw a sample from each of two populations Conducting & Reading Research Baumgartner et al

3. Is there a sex difference for alcohol intake in C57 strain of mice? • Step 1: define hypotheses Conducting & Reading Research Baumgartner et al

4. Is there a sex difference for alcohol intake in C57 strain of mice? • Step 2: define alpha level Conducting & Reading Research Baumgartner et al

5. Is there a sex difference for alcohol intake in C57 strain of mice? • Step 3: Determine critical value • Step 4: Conduct statistical test Conducting & Reading Research Baumgartner et al

6. Is there a sex difference for alcohol intake in C57 strain of mice? • Step 5: Accept or reject null hypothesis Conducting & Reading Research Baumgartner et al

7. Two dependent Groups t Test • Repeated measures design: • Matched pairs design: Conducting & Reading Research Baumgartner et al

8. Decision on Alternate Hypotheses and Alpha Level • Remember to consider whether the test is one- or two-tailed Conducting & Reading Research Baumgartner et al

9. Decision on Alternate Hypotheses and Alpha Level • Remember to consider whether the test is one- or two-tailed Conducting & Reading Research Baumgartner et al

10. Decision on Alternate Hypotheses and Alpha Level • Remember to consider whether the test is one- or two-tailed Conducting & Reading Research Baumgartner et al