Definition:Regression/Cause Variable

Definition

Let $X$ and $Y$ be random variables.

Let $\map f {Y, x}$ denote the regression of $Y$ on $X$.

The random variable $X$ is known as the cause variable.

Also known as

The cause variable of a regression is also known as:

the explanatory variable

the fixed variable

the predicated variable

the predictor variable

the regressor.

It is also known as the independent variable.

However, this name is used in a wider context than regressions, and so is not endorsed on $\mathsf{Pr} \infty \mathsf{fWiki}$.

Also see

• Results about cause variables can be found here.

Sources

• 2008: David Nelson: The Penguin Dictionary of Mathematics (4th ed.) ... (previous) ... (next): cause variable
• 2008: David Nelson: The Penguin Dictionary of Mathematics (4th ed.) ... (previous) ... (next): regression