The expected value of a random variable is the
A) value that has the highest probability of occurring.
B) mean value over an infinite number of observations of the variable.
C) largest value that will ever occur.
D) most common value over an infinite number of observations of the variable.

Question

Quizplus · Accepted Answer

The expected value of a random variable is essentially the long-term average value of the variable over many trials or observations, hence it is the mean value over an infinite number of observations.

The Expected Value of a Random Variable Is the