Question

Which of the following statements describes all the variables in an experiment?

A. All variables are kept the same from one part of the experiment to another.
B. All variables affect the results of the experiment.
C. All variables are measured to provide data for the experimental results.
D. All variables are changed from one part of the experiment to another.

Answer 1

C) All variables are measured to provide data for the experimental results.

A is untrue because the independent variable will be changed to see how it changes the results.

B is untrue because the controlled variable will not be affecting the experiment because it is unchanging throughout the experiment.

D is untrue because the controlled variable will NOT be changing throughout the experiments.

Answer 2

What's SUPREME?

B is the correct answer. That's why it's important to have only ONE variable in a controlled experiment. Natural or unnecessary factors can affect your findings.