Which of the following is the best description of a control for an experiment?
A. The control group is kept in an unchanging environment.
B. The control group is left alone by the experimenters.
C. The control group is matched with the experimental group except for the one experimental variable.
D. The control group is exposed to only one variable rather than several.
Answer:C
Which of the following is the best description of a control for an experiment?
A. The control group is kept in an unchanging environment. B. The control group is left alone by the experimenters. C. The control group is matched with the experimental group except for the one experimental variable. D. The control group is exposed to only one variable rather than several.