If the mean and variance are computed for each sample in an independent-

measures two-factor experiment, then which of the following types of sample data

will tend to produce large F-ratios for the two-factor ANOVA?

a. large differences between sample means and small sample variances

b. large differences between sample means and large variances

c. small differences between sample means and small sample variances

d. small differences between sample means and large variances

A two-factor, independent-measures research study is evaluated using an analysis

of variance. The F-ratio for factor A has df = 1, 40 and the F-ratio for factor B has df

= 3, 40. Based on this information, what are the df values for the AxB interaction?

a. df = 2, 40

b. df = 3, 40

c. df = 4, 40

d. df = 6, 40