Question

Compare the grades on a final math test of 25 students who use calculators and 25 students who do not use calculators. The students decide which group they are in.

A. ExperimentB. Observational Study

Answer 1

This is an Observational Study

Explanation:

The students is deciding which group they will be in. According to this information we can say that this is a observational study. Investigator doesn't control the groups, each student decides their own choice. If investigator decided the groups then this experiment would be Experimental study.