See: Independent Random Variable, Regression Analysis.
References
- http://en.wiktionary.org/wiki/independent_variable
- independent variable (plural independent variables)
- 1. (algebra) In an equation, any variable whose value is not dependent on any other in the equation. In the equation z = x2 + y, x and y are the independent variables.
- 2. (sciences) The variable that is changed in an experiment.