A scientist randomly divided a group of 100 lab rats into two groups of 50. One group was fed regular rat chow while the other was fed the same amount of rat chow with added DDT. Both groups were housed in the same room with the same environmental conditions. At the end of the experiment, rats were weighed and the mean difference calculated.
-Refer to the accompanying narrative. Which dependent variable was measured?
A)DDT
B)temperature
C)weight
D)amount of food
E)length of day

Question

Quizplus · Accepted Answer

The dependent variable measured in the experiment is the weight of the rats, as the experiment aimed to observe how the addition of DDT to their diet affected their weight.

A Scientist Randomly Divided a Group of 100 Lab Rats