1.When checking the homogeneity of variance assumptions for a t-test, which of the following graphical displays would be most helpful for you?

A.Scatterplot

B.Overall Boxplot/Box and Whiskers Plot for the outcome measure

C.Stacked bar charts on the outcome measure

D.Boxplot/Box and Whiskers Plot for the outcome measure by group

2.Under the assumptions of a one sample t-test, what is assumed to be normally distributed in the population?

A.The mean

B.The outcome measure

C.The standard deviations

D.The differences between outcome measures

3.Pearson's Product Moment Correlation Coefficient is a measure of the strength and direction of a

relationship between two variables.

A.Quadratic

B.Linear

C.Curvilinear

D.Asymptotic

4.An obtained correlation coefficient of 0.17 would be considered, under Cohen's rules of thumb, a

correlation.

A.Low

B.Moderate

C.Non-existent

D.High