Joe and Angie are studying how listening to music affects grades. Joe listened to music while he studied while Angie studied in silence. After two weeks, they took the same math test and Joe scored higher than Angie. They came to the conclusion that listening to music will improve grades. What comment would you make to Joe and Angie about their experiment?

They should tested more people

Explanation:

To conduct an experiment, they have to collect many data, repeating the experiment multiple time, design the study etc .

The method used in this scenario is wrong, the outcome of their experiment is based on one sample and the experiment was only conducted once with test of validity.

The result gotten this research may had been because of preference in their reading environment

Joe might like listening to music while he studied which gives him edge to performed well.

Before they can come to a conclusion, they have to involve many individuals in the study

answer; validity;