Question

10.________ is the proportion of variance in the dependent variable that is accounted for by the independent variable.

Select one:

A. z

B. R²

C. t

D. Cohen's d

11.

Using the following incomplete source table, what decision can be made about the hypotheses being tested?

Source	SS	df	MS	F
Between-groups	10.1	2	5.05
Subjects	7.4	4	1.85
Within-groups	8.5	8	1.063
Total	26	14

Select one:

A. Fail to reject the null hypothesis because the F statistic does not exceed the critical cutoff.

B. Fail to reject the null hypothesis and conclude there is no effect of the independent variable.

C. Reject the null hypothesis and conclude there are differences among the levels of the independent variable.

D. Reject the null hypothesis and conclude the independent variable has no effect.

12.

n addition to hypothesis testing, effect size calculations are recommended as a way to assess:

Select one:

A. where the significant differences exist among groups.

B. the power of the statistical analysis.

C. whether the significant differences found are large enough to matter.

D. the number of subjects needed to correctly reject the null hypothesis.

Answer 1

10. R2 is the proportion of variance in the dependent variable that is accounted for by the independent variable.

Option B is correct.

11. Reject the null hypothesis and conclude there are differences among the levels of the independent variable.

Option C is correct.

12. Option C is correct.