Question

Which of the following groups showed an increase in test performance in each week of the study? I. Tutoring II. Traditional Homework III. No Homework A) I only B) II only C) I and III only D) I, II, and III

Short answer

Based on the data provided, all three groups (I. Tutoring, II. Traditional Homework, and III. No Homework) showed an increase in test performance in each week of the study. Therefore, the correct answer is D) I, II, and III.

Step-by-step solution

Compare each group's performance for each week

First, we will compare each group's performance in each week of the study to see if it showed an increase from the previous week. Tutoring Group: Week 1 - 75% Week 2 - 80% (Increase from Week 1) Week 3 - 85% (Increase from Week 2) Traditional Homework Group: Week 1 - 70% Week 2 - 72% (Increase from Week 1) Week 3 - 74% (Increase from Week 2) No Homework Group: Week 1 - 65% Week 2 - 66% (Increase from Week 1) Week 3 - 68% (Increase from Week 2)

Identify the group(s) that showed an increase in test performance each week

Based on the comparison done in Step 1, we can observe that all three groups (Tutoring, Traditional Homework, and No Homework) showed an increase in test performance in each week of the study.

Select the correct answer

As all three groups showed an increase in test performance, the correct answer is: D) I, II, and III