hypothesis tests with related samples

Question 1

repeated-measures study (within-subjects design)

Answer 1

a single sample of individuals is tested more than once on the dependent variable; the same subjects are used for every treatment condition

Question 2

matched-subjects experiment

Answer 2

each individual in one sample is matched with a subject in the other sample; the matching is done so that the two individuals are equivalent (or nearly equivalent) with respect to a specific variable that the researcher would like to control

Question 3

assumptions of the related-samples t statistic

Answer 3

(1) the observations within each treatment condition are independent; (2) the population distribution of difference scores is normal