Which of the following is an example of a discrete random variable?
A)The monthly electric bill for a local business.
B)The number of people eating at a local café between noon and 2:00 p.m.
C)The amount of time it takes for a worker to complete a complex task.
D)The percentage of people living below the poverty level in Boston.

Question

Quizplus · Accepted Answer

A discrete random variable is one that can only take on certain specified values. The number of people eating at a local café between noon and 2:00 p.m. is a discrete variable because it can only take on whole number values (i.e. you can't have half a person). The other options are either continuous random variables (A and C) or not random variables at all (D).

Which of the Following Is an Example of a Discrete