Suppose a researcher wants to determine if the size of the crowd affects how bystanders treat an accident victim. The researcher randomly assigns participants to one of three groups: no other bystanders, one other bystander, or four other bystanders. When an emergency is then staged, the researcher measures how long it takes the participant to help the victim. In this study, what is the independent variable?

Question

Quizplus · Accepted Answer

The independent variable is the variable that is manipulated and tested by the researcher. In this case, the researcher is manipulating the number of bystanders present, so the number of bystanders is the independent variable.

Suppose a Researcher Wants to Determine If the Size of the Crowd