Question

The independent variable in a regression line is:

• A. Non-random variable
• B. Random variable
• C. Qualitative variable
• D. None of these

Answer 1

The correct option is A Non-random variable

A linear regression line has an equation of the form $Y=a+bX$

where $Y$ is called dependent variable or response.

$X$ is called independent variable or predictors or explanatory variable

$a$ is the y-intercept and

$b$ is the slope of the line.

The independent variable is a non-random variable. The non-random variable don't admit a probability measure.