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.

Power of Within-Subjects Designs Demonstration

Questions

Question 1 out of 4.
Increasing the correlation between measures:

increases power.

decreases power.

has no effect on power.


Question 2 out of 4.
Increasing the population variance:

increases power.

decreases power.

has no effect on power.


Question 3 out of 4.
Increasing the difference between population means:

increases power.

decreases power.

has no effect on power.


Question 4 out of 4.
Assuming the hypothesized direction of the effect is correct, a one-tailed test is:

more powerful than a two-tailed test.

less powerful than a two-tailed test.

has the same power as a two-tailed test.