One sample has a variance of s2 = 10 and a second sample has a variance of s2 = 6.  If the two samples have the same number of scores, what is the pooled variance for the two samples?

An independent-measures study comparing two treatment conditions produces a t statistic with df = 18.  If the two samples are the same size (n1 = n2), how many participants were in each of the samples?

A two-factor research study has two levels of factor A and three levels of factor B with 8 participants in each treatment condition.  For this study, what is the value for dfbetween treatments?

In a linear regression equation with the form y = bx + a, what does the “a” represent?

Using letter grades (A, B, C, D, and F) to classify student performance on an exam is an example of measurement on a(n) ____ scale of measurement.

For a two-factor study with 2 levels of factor A, 2 levels of factor B, and a separate sample of 10 participants in each treatment condition, the two means for level A1 are 4 and 1, and the two means for level A2 are 3 and 2.  For these data, what is the value of SSbetween treatments?

What is the critical value for a regression analysis with n=20, 1 predictor variable, and an alpha level of 0.01?

A researcher studies the number of dogs in an average household in Wisconsin. The number of dogs is an example of a(n) _________ variable.

A set of N = 10 scores has a mean of µ = 50.  If 20 points are added to one of the scores, what is the new value for the population mean?

A repeated measures study uses a sample of 25 participants to evaluate the mean differences among 7 treatment conditions. In the analysis of variance for this study, what is the value for dfwithin groups?