it is vital for the investigator to see the test scores of both the groups to evaluate the teaching methods. In this case, the new teaching method was found to be effective from the scores collected. Also, I believe the level of teaching skills/motivation of each instructor is crucial in the evaluation of effectiveness in this study. Another factor to be considered would be the size of each group because the larger the group, the lesser effective the teaching method would be.
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Answer:
it is vital for the investigator to see the test scores of both the groups to evaluate the teaching methods. In this case, the new teaching method was found to be effective from the scores collected. Also, I believe the level of teaching skills/motivation of each instructor is crucial in the evaluation of effectiveness in this study. Another factor to be considered would be the size of each group because the larger the group, the lesser effective the teaching method would be.