For a sample with M = 80, a score of X = 88 corresponds to z = 2.00.  What is the sample standard deviation?

An analysis of variance comparing three treatment conditions produces dfwithin = 21.  If the samples are all the same size, how many individuals are in each sample?

Which of the following is an example of a situation for which an independent-measures t-test would be the most appropriate?

A researcher uses a repeated-measures design to compare individuals’ performance before treatment with their performance after treatment.  If all of the participants show improved performance of 8 or 9 points after treatment, then the researcher should find ____.

If the sample mean difference is 3 points, which of the following sets of data would produce the largest value for Cohen’s d?

You have a score of X = 65 on an exam.  Which set of parameters would give you the best grade on the exam?

The results of a two-factor analysis of variance produce df = 2, 36 for the F-ratio for factor A and df = 2, 36 for the F-ratio for factor B.  What are the df values for the AxB interaction?

What is the final step to be performed when computing Σ(X – 2)2?

If it is impossible to divide the existing categories of a variable, then it is an example of a(n) ____ variable.

If the Pearson correlation is calculated for a sample of n = 20 individuals, what value for df should be used to determine whether or not the correlation is significant?