When analyzing data to determine differences between groups, it is important that the researcher know if the data sets are independent or dependent on one another and make any needed adjustments in statistical calculations. An example ofindependent groups is:

Group of answer choices

Matched pairs of subjects used for the control and treatment groups

Comparison of mother and daughter groups in relation to premenstrual symptoms

Comparison of pretest and post-test groups.

Intervention and control group made of different subject who were randomly assigned to groups