Determine which evaluation guideline(s) apply in questioning the results of the described study
-A mathematics teacher wanted to determine whether assigning homework had a beneficial effect on student learning in first year algebra. His class met at 8:00 in the morning and he obtained the cooperation of another teacher of the same class that met at 2:00 in the afternoon.
He gave his class no homework while the other teacher continued to assign homework as he usually did. Both teachers gave the same tests so that they could compare the results.
A) Consider possible confounding variables
B) Consider the sample
C) Consider the measurement of the variable of interest
D) All of the above

Question

Quizplus · Accepted Answer

All of the evaluation guidelines apply in questioning the results of the described study. The teacher did not consider possible confounding variables, such as the time of day the classes met. He also did not consider the sample, as the two classes may have been different in terms of their ability levels. Finally, he did not consider the measurement of the variable of interest, as the tests may not have been equivalent.

Determine Which Evaluation Guideline(s) Apply in Questioning the Results of the Described