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DISCUSSION QUESTIONS

1. What are the major steps to prepare data for statistical analysis?
2. What are the measures of central tendency?
3. What are the measures of spread?
4. What is normal distribution? Why is it important to test whether a data sample
is normally distributed?
5. What statistical methods are available for comparing group means?
6. What statistical method can be used to compare two group means contributed
by two independent groups?
7. What statistical method can be used to compare two group means contributed
by the same group?
8. When should a one-way ANOVA test be used? Describe a research study
design that fits the one-way ANOVA test.

9. When should a factorial ANOVA test be used? Describe a research study
design that fits the factorial ANOVA test.
10. When should a repeated measures ANOVA test be used? Describe a research
study design that fits the repeated measures ANOVA test.
11. When should a split-plot ANOVA test be used? Describe a research study
design that fits the split-plot ANOVA test.
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12. When should correlation analysis be used? What does Pearson's r represent?
13. When should regression analysis be used? Describe a research study that
requires regression analysis.
14. Name two regression procedures and discuss when a specific procedure should
be used.

15. What are the assumptions for parametric statistical tests?
16. When should nonparametric tests be considered?
17. Is the Chi-squared test “assumption free”? If not, what are the assumptions of a
Chi-squared test?
18. What are the alternative nonparametric tests for the independent-samples t test,
the paired-samples t test, the one-way ANOVA test, and the one-way repeated
measures ANOVA test?