(Machine|Statistical) Learning - (Predictor|Feature|Regressor|Characteristic) - (Independent|Explanatory) Variable (X)


A Independent variable is a variable used in supervised analysis in order to predict an outcome variable.

It's also known as:

Independent variable

In statistics, a predictor is well known as an independent variable (IV). It does not depend of the experimentational procedure and is more generally:

  • a description of the characteristics of a group.
  • better known as the manipulation, the treatment or conditions.


A Quasi-independent variable is a variable that can not be random assigned (example: concussions, gender, Sexual orientation) .

Since the independent variable does not involve random and representative sampling, arguments about causality are not as strong



Some predictors are not quantitative but are qualitative, taking a discrete set of values.

These are also called:


  • gender,
  • student (student status),
  • status (marital status)

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