More on ANOVA

Read this chapter and complete the questions at the end of each section. While these sections are optional, studying ANOVA may help you if you are interested in taking the Saylor Direct Credit exam for this course.

Tests Supplementing ANOVA

Answers

  1. Rejecting the null hypothesis only indicates that at least one population mean is different from at least one other.

  2. The mean of the means of one variable averaging over the levels of another variable.

  3. Marginal means

  4. A specific comparison

  5. Tukey's test

  6. Main effects. The interaction means the simple effects differ and therefore the main effect does not tell the whole story.

  7. False, because it is not valid to accept the null hypothesis that a simple effect is 0 when it is not significant.