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independent variable

The definition of an independent variable is a factor that does not change in value based on other factors.

(noun)

An example of an independent variable is a temperature that stays constant during a science experiment.

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See independent variable in Webster's New World College Dictionary

Math. a variable whose value may be determined freely without reference to other variables

See independent variable in American Heritage Dictionary 4

noun
  1. Mathematics A variable whose value determines the value of other variables.
  2. Statistics A manipulated variable in an experiment or study whose presence or degree determines the change in the dependent variable.

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