# How do the terms "explanatory variable" and "response variable" relate to the terms "independent variable" and "dependent variable"?

##### 1 Answer

Feb 11, 2015

In regression the **dependent variable** is known as the **response** variable or in simpler terms the regressed variable.

The **independent variable** is called the **Explanatory variable** (or better known as the predictor) - the variable which influences or predicts the values. i.e. if the explanatory variable changes then it affects the response variable.

If we look at the equation: Y= α+ßX

Here Y is the Dependent variable or response variable.

X is the independent variable or the explanatory variable.

As the value of X changes, the value of Y will change

α and ß are constant here.

To remember easily you can think that X '' **EXPLAINS** '' how the value of Y will go and hence its the **EXPLANATORY VARIABLE**.