An experiment is conducted to examine the effects of a certain drug on rats.A pair of rats is housed in a cage.Suppose that the drug is to be given by injection.One drug treatment is assigned to one of the rats in a cage,while the other drug is assigned to the other rat.What is the experimental unit/subject?
A)The cage
B)The rats
C)The drug
D)None of the above

Question

Quizplus · Accepted Answer

The experimental unit/subject is the individual animal, in this case the rats, as they are the ones receiving the treatment and being measured for the effect of the drug. The cage is simply the location where the rats are housed and does not receive any treatments or measurements directly. The drug is the intervention being studied, but not the unit/subject.

An Experiment Is Conducted to Examine the Effects of a Certain