Question

Why is important to only test one variable at a time?

A) If you test more than one at a time, you can’t graph the data.
B)You need to be certain that only the independent variable being tested causes the changes in results.
C) It invalidates the hypothesis.
D) None of the Above.

Answer 1

B

Step-by-step explanation:

It is important to only test one variable at a time because you need to be able to disprove or prove a problem with just one independent variable. When you have several variables in the experiment, it would be impossible to know which variable honestly caused the end result.