MultipleChoice Which one is a discrete variable Radius of a

Multiple-Choice: Which one is a discrete variable?

Radius of a ball in an urn

Weight of a ball in an urn

Diameter of a ball in an urn

Number of balls in an urn

Solution

A discrete variable can only take up some specific values.

Hence,

OPTION D: Number of balls in an urn [ANSWER]

as it can only take integer values.