Question

question 14 of 15
if you were testing how well different dish soaps cleaned your dishes, the control group would be:
a. a group of dishes that was placed in a different washing machine.
b. a group of dishes that received the standard amount of dish soap.
c. a group of dishes with twice the normal amount of dirt on them.
d. a group of dishes that did not get washed.

Explanation:

In an experiment to test dish - soap cleaning ability, the control group is a baseline for comparison. It should have no treatment (no dish - soap in this case). A group of unwashed dishes provides this baseline.

Answer:

D. a group of dishes that did not get washed