Table of Contents
Why do we use control variables?
Control variables enhance the internal validity of a study by limiting the influence of confounding and other extraneous variables. This helps you establish a correlational or causal relationship between your variables of interest.
What is a control variable and why is it important?
A variable that remains unchanged or held constant to prevent its effects on the outcome and therefore may verify the behavior of and the relationship between independent and dependent variables. Control variables are important in scientific experiments to test the validity of the results.
What are control variables used for?
What variables do you need to control in your experiment?
Duration of the experiment
What is the purpose of controlling variables in an experiment?
A control variable in science experiments is what allows you to compare other things that may be contributing to a result because you have kept other important things the same across all of your subjects.
Why do you control some variables in an experiment?
A control variable in science experiments is what allows you to compare other things that may be contributing to a result because you have kept other important things the same across all of your subjects. When graphing the results of your experiment, it is important to remember which variable goes on which axis.
What does it mean to control the variables in an experiment?
A control variable is an element that is not changed throughout an experiment, because its unchanging state allows the relationship between the other variables being tested to be better understood. Essentially, a control variable is what is kept the same throughout the experiment, and it is not of primary concern in the experimental outcome.