A psychology professor is conducting a one-tailed related samples t-test with a sample of n=22. He obtains a test statistic of t=1.33 and uses an alpha level of .05. Compute effect size (r2).

A matched-subjects study and an independent-measures study both produced a t statistic with df = 16.  How many individuals participated in each study?

Why do we square our deviations?

A researcher records the change in weight (gain or lost) during the first semester of college for each individual in a group of 25 freshmen, and calculates the average change in weight.  The average is an example of a ____.

How does sample variance influence the likelihood of rejecting the null hypothesis and measures of effect size such as r2 and Cohen’s d?

For a population with a standard deviation of s = 6, what is the z-score corresponding to a score that is 12 points above the mean?

What is the critical value for factor B in a Factorial ANOVA with N=46, 5 levels for factor A and 6 levels for factor B, and an alpha level of 0.01?

After measuring two individuals, a researcher can say that Tom’s score is four points higher than Bill’s. The measurements must come from a(n) ____ scale.

if SStotal = 65 and SSBG = 20 what is SSWG?

If a frequency distribution is shown in a bar graph, what scale was used to measure the scores?