7. Two groups of subjects were divided in an experimental study. One group was given a drug to help speed up their metabolism and result in weight loss. The other group was given a placebo (a pill that looks identical

to the one given to the other group, but without the weight loss drug). After a month of the experiment, the

weight loss of each individual in each of the two groups were measured. In general, people in the group who

took the metabolism drug did lose more weight, although there were differences in the amount each lost.

There are two main types of variability occurring in this study. Describe each type below in the context of

this study

Induced Variability

Natural Variability