HTH 320 FINAL EXAM STUDY GUIDE QUESTIONS WITH COMPLETE SOLUTIONS

HTH 320: FINAL EXAM STUDY GUIDE QUESTIONS WITH
COMPLETE SOLUTIONS



what must you do when finding significance in ANOVA? -- Answer ✔✔ conduct post
hoc tests (Tukey’s)

what are the steps of hypothesis testing -- Answer ✔✔ 1. state the null and alternative
hypothesis
2. set criteria for decision
3. compute the test statistic
4. make a decision

degrees of freedom between groups for ANOVA -- Answer ✔✔ k (number of groups) -
1

degrees of freedom within groups for ANOVA -- Answer ✔✔ N (number of total
participants - k (number of groups)

effects size for one-sample ttest -- Answer ✔✔ cohen's D (number of standard
deviations an effect shifted above/below the population mean stated by null hypothesis)
=(M - mu)/population standard deviations

effect size for two-sample independent ttest -- Answer ✔✔ estimated cohen's D
(number of standard deviations an effect shifted above/below the population mean
stated by null hypothesis)
eta-squared (proportion variance)= (t^2)/(t^2 +df)
Omega-squared (more accurate proportion variance)= (t^2 -1)/(t^2 +df)

effect size for ANOVA -- Answer ✔✔ eta squared (proportion variance) (t^2)/(t^2 +df)