Which one of the following represents a discrete variable?
A) number of children per family
B) amount of water consumed daily by a laboratory rat
C) noon temperature measured in Celsius
D) rate of bar-pressing

Question

Quizplus · Accepted Answer

A discrete variable is a variable that can only take on a finite or countable number of values. The number of children per family is a discrete variable, as it can only take on integer values (e.g. 0, 1, 2, 3...). The other options are continuous variables, as they can take on any value within a certain range (e.g. amount of water consumed, temperature, rate of bar-pressing).

Which One of the Following Represents a Discrete Variable