66.5k views
0 votes
Which of the following is part of a observational study?

Placebo
Treatment
Control Group
Variable of interest

User X Pahadi
by
9.6k points

1 Answer

3 votes
B. Treatment.
I do not know what Placebo is, though, so before you put this answer, please explain it to me.
User Fatih BAKIR
by
8.4k points