The Same Researcher Now Wants to Examine If Student Scores

Multiple Choice

The same researcher now wants to examine if student scores will increase as the instructional time increases. She randomly assigned 60 students to three classes. Each class spent 4 hours, 5 hours, and 6 hours per day respectively on instruction. Then she compared the average scores of the three classes. Which procedure is the most appropriate for this research question?

A) Dunnett method
B) Dunn (Bonferroni) method
C) Tukey HSD
D) Trend analysis