What is the purpose for post tests?

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?

If the null hypothesis is true and there is no treatment effect, what value is expected for the F-ratio?

For an independent-measures experiment comparing two treatment conditions with a sample of 10 in each treatment, which of the following identifies the correct df for the F-ratio?

For a repeated-measures study comparing two treatment conditions, a researcher obtains a sample of n = 9 difference scores with a mean of 4 and a variance of 36.  What is the value for the repeated-measures t statistic for these data?

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?

If an analysis of variance is used for the following data, what would be the effect of changing the value of SS2 to 100?Sample DataM1 = 15   M2 = 25 SS1 = 90   SS2 = 70

A research study compares the age of women who give birth and the likelihood of having a child with Down Syndrome. The study finds that the older a woman is the more likely they are to have a child with Down Syndrome. What research design does this study use?

A sample of n = 20 scores is transformed into z-scores.  What is the mean for the set of 20 z-scores?

Under what circumstances is a score that is 5 points above the mean considered a central value–meaning it is relatively close to the mean?