Discrete and Continous Variables

Discrete Variables

Discrete variables are fixed quantities. They are also called categorical variables. A discrete variable, X, can take on a finite number of numerical values, categories or codes.

Ex. 

• Age of a college professor chosen at random

• Number of books in the university library

Continuous Variables

Continuous variables can assume an infinite number of values. They are variables with decimal numbers and uncertain quantities.

Ex.

• Speed of a race car

•  Height of a basketball player chosen at random