7. Determine whether the study depicts an observational study or an experiment.

Question

7. Determine whether the study depicts an observational study or an experiment.

Sixth grade students are randomly divided into two groups. One group is taught English using

traditional techniques. The other is taught English using a reform method. After 1 year each group is given an achievement test to compare its proficiency with that of the other group.

Choose the correct description of the study.

MULTIPLE CHOICE

A. The study is an experiment because the researchers control one variable to determine the effect on the response variable.

B. The study is an observational study because the study examines individuals in a sample, but does not try to influence the response variable.

C. The study is an observational study because the researchers control one variable to determine the effect on the response variable.

D. The study is an experiment because the study examines individuals in a sample, but does not try to influence the variable of interest.

Explanation / Answer

Option A is Correct. The study is an experiment because the researchers control one variable to determine the effect on the response variable.

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