Aresearcher tests the hypothesis that students who study in the room where they take their tests will perform better on the tests than students who study in other rooms. she requires one group to study in the classroom where the exam is given and another group to study in the library. all students take the test in the classroom, and their test performance is compared. in this example, where students study is the:
a. independent variable.
b. dependent variable.
c. manipulation.
d. hypothesis.

a. independent variable.

Explanation:

The effect of the room, in which the students study is being measured on the basis of their performance on the test.

The room in which the students study changes irrespective of their performance in the test.

However, the performance of the students is being compared between the students who studies in the classroom and the library. The performance should change with respect to the rooms they study in.

Hence, the performance is the dependent variable and the rooms where students study is the independent variable.

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