Fawzi wants to see if nicotine causes cancer in rats.Half of his rats are given nicotine,and the other half are not.In this experiment,the rats that receive nicotine are the ____,and the rats that do not are the ____.
A) independent variable; dependent variable
B) dependent variable; independent variable
C) control group; experimental group
D) experimental group; control group

Question

Quizplus · Accepted Answer

The experimental group receives the treatment or manipulation in the study, which in this case is nicotine, and the control group does not receive the treatment. Therefore, the rats that receive nicotine are the experimental group, and the rats that do not are the control group. The independent variable is the factor being manipulated or changed in the study, and the dependent variable is the outcome being measured or observed. Neither nicotine nor the rats can be considered independent or dependent variables in this scenario, so options A and B are incorrect. While option C correctly identifies the control group, it incorrectly labels the experimental group as the dependent variable.

Fawzi Wants to See If Nicotine Causes Cancer in Rats