What is the preferred statistical technique for analyzing the data from an experiment that employs a posttest-only control-group design?
A) a t test comparing the posttest means of the experimental and control groups.
B) multiple regression.
C) analysis of covariance.
D) the correlation ratio.

Question

Quizplus · Accepted Answer

A t test comparing the posttest means of the experimental and control groups is the preferred statistical technique for analyzing data from a posttest-only control-group design because it directly compares the means of the two groups to determine if there is a statistically significant difference between them, which is the primary interest in such experimental designs.

What Is the Preferred Statistical Technique for Analyzing the Data