9.6k views
0 votes
A student is testing to see how exercise affects heart rate. One group of students sits without exercising; one group of students runs; and one group of students swims. All students have their heart rates measured immediately before and after the session. Is this a controlled or comparison experiment?

1 Answer

1 vote
Comparison. Controlled is where everything is the same (if I remember correctly) and comparison is comparing
User Phobic
by
8.6k points

No related questions found