# arrow_back What does "controlling for a variable" mean?

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What does "controlling for a variable" mean?

"Controlling for a variable" means measuring extraneous variables and accounting for them statistically to remove their effects on other variables.

Researchers often model control variable data along with independent and dependent variable data in regression analyses and ANCOVAs. That way, you can isolate the control variable's effects from the relationship between the variables of interest.
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