The expected value of a random variable is
A)the probability weighted mean
B)a measure of central tendency of the pdf
C)average value that occurs in many repeated trial of an experiment
D)all of the above

Question

Quizplus · Accepted Answer

The expected value of a random variable is the probability weighted mean, which is a measure of central tendency of the pdf. It is also the average value that occurs in many repeated trials of an experiment. Therefore, all of the above options are correct.

The Expected Value of a Random Variable Is