Dr Smith Is Conducting a Nonequivalent Control Group Quasi-Experiment

Multiple Choice

Dr. Smith is conducting a nonequivalent control group quasi-experiment. Results of a pretest show that members of the experimental and control group differ on the dependent variable. What can Dr. Smith do about this outcome?

A) match participants from the experimental and control groups on pretest scores and analyze only the data from the matched participants.
B) statistically control for those preexisting differences using an analysis of covariance.
C) conduct a pretest-posttest study using the experimental group participants and not use a control group at all.
D) conduct an interrupted time series analysis of experimental and control group posttest scores.