Robinson manipulates two variables in his experimental investigation of test-taking performance: the number of participants seated in the room and the room temperature. He finds that regardless of the temperature in the room, participants do better on the test when the room is less crowded. Which of thefollowing statements about this study is true? a. There are two independent variables in this study. b. There is one independent variable in this study. c. There are two dependent variables in this study. d. None of these

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Social Studies

Jamarcus Palmer

1 January, 18:39

Robinson manipulates two variables in his experimental investigation of test-taking performance: the number of participants seated in the room and the room temperature. He finds that regardless of the temperature in the room, participants do better on the test when the room is less crowded. Which of thefollowing statements about this study is true? a. There are two independent variables in this study. b. There is one independent variable in this study. c. There are two dependent variables in this study. d. None of these

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Heidi Boyd · Answer 1

The answer is a. There are two independent variables in this study.

Explanation:

In experimental research, one or more independent variables are expected to change a dependent variable. In the example, both the number of people in the room and the temperature are expected to affect the participants' performance (the dependent variable).

An easy way to remember the difference is to say: independent causes change in dependent.