Which of the following is NOT an example of a discrete random variable?

Question

Which of the following is NOT an example of a discrete random variable?

X = Total steps walked in a day

X = Number of flights that arrive in Edmonton in a day

X = Number of bedrooms in a house

X = Number of people on the bus

X = Total time spent driving in a day

Answer 1

A discrete random variable is one that has finite number of values. The number of objects or occurrences is a finite value, so it is discrete. A continuous random variable has infinite possible value. Time is a continuous random variable.