Chapter 5 One Way & Two Way ANOVA

The main purpose of a two-way ANOVA is to assess the interaction effect between two independent variables and the dependent variable.

• True

• False

If a one-way ANOVA yields a significant result, post hoc tests are typically conducted to determine which specific group means are different from each other.

• True

• False

Independent sample t-tests can be used to determine whether the average test score of a group of students is significantly different from a known population mean test score.

• True

• False

Which of the following is NOT an assumption of ANOVA?

• The dependent variable (DV) must be measured on an interval or ratio scale.

• The data should be normally distributed.

• The variances of groups or conditions should be different.

• The groups should have approximately equal sample sizes.

Family-wise error refers to the possibility of making at least one Type I error across all hypothesis tests conducted within a family of tests.

• True

• False

Imagine you are conducting a research study to compare the average test scores of three different groups of students: Group A, Group B, and Group C. Which statistical test should you use?

• Independent Sample T-Test

• One Sample T-Test

• One-Way ANOVA

• Two-Way ANOVA