The expected value of a random variable X can be referred to or denoted as ________.
A) µ
B) E(X)
C) The population mean
D) All of the above

Question

Quizplus · Accepted Answer

All of the options mentioned are correct ways to refer to the expected value of a random variable X. Option A (µ) is commonly used when referring to the population mean, option B (E(X)) is the mathematical notation used to represent the expected value of X, and option C indicates that the expected value is also equal to the population mean in the case of a population with a known distribution. Therefore, all of the above options are correct ways to refer to the expected value of X.

The Expected Value of a Random Variable X Can Be