The major advantage of non-parametric tests is that:

A Greenhouse-Geisser correction is a correction applied to:

One of the assumptions of linear regression, called the assumption of _________, is that the size of the errors of prediction does not depend on the value of X.

A study found that rats that received a drug took longer to find their way out of a maze than rats that received a placebo, F(1, 47) = 5.29, p < 0.05. The drug had a large effect on albino rats and virtually no effect on wild-bred rats, F(1, 47) = 9.31, p < 0.05. However, there was no overall difference in the time of albino rats compared to that of wild-bred rats, F(1, 47) = 2.27, p > 0.10. Which effect(s) must be present for these results to be true?

You want to run a study examining the effects of poverty on the development of antisocial behavior. You randomly select a large group of 12-year-old children and sort them into three groups on the basis of family income. You meet with them yearly until they are 25 years old, using a standard assessment of antisocial behavior. What test should you run to analyze this data?

A researcher wants to examine people's preference for pets by having 12 people act as "foster owners" for three different types of family pets: dogs, cats, and fish. The participants will foster each type of pet for one week, and a scale measure will be used to assess preference. Which research design should be used?

The main effect of a variable is:

A(n) _____ occurs when _____ independent variable(s) have an effect on the dependent variable in combination with one another.

In a factorial analysis of variance you can have:

A 2 x 4 factorial ANOVA has: