Question

Below are several research scenarios. Indicate which set of statistical analyses (e.g., ANOVA, independent samples t test, correlated samples t test, correlation, chi-square, regression) should be used to analyze the data collected in study, and explain why that statistical test should be used (2 points each; 8 points total).

A researcher developed a video designed to enhance creative writing. Fifty high school students were asked to participate in the study. Twenty-five were randomly assigned to group A and the other twenty-five were assigned to group B. The video was shown to group A, and group B read a short story by Mark Twain. Both groups knew they were participating in an experiment, and both groups also knew that group A was the experimental group. After receiving their treatments, both groups were asked to write an essay on anything they chose. Next three English teachers read each and every essay and provided a creativity score for the essay ranging from a low of one to a high of ten.

Answer 1

The appropriate test is the independent samples t-test.

This is because the subjects are independent of each other and are in two groups.