Question

A ______ involves both an experimental group and a control group, which are alike except for the one viable that the experiment is designed to test.

Answer 1

controlled experiment

Explanation:

Controlled experiment is a type of experiment in which except for only one variable, everything is kept constant.

The common type of the controlled experiment compares the control group against the experimental group. All the variables are identical between two groups except factor which is being tested.

Big advantage of the controlled experiment is that one can eliminate much of uncertainty about the results.