PRMIA Exam 8007 Topic 1 Question 27 Discussion

Actual exam question for PRMIA's 8007 exam

Question #: 27
Topic #: 1

Suppose a discrete random variable can take on the values -1, 0 and 1 each with a probability of 1/3. Then the mean and variance of the variable is

Amean is 0, variance is 2/3

Bmean is 0, variance is 1/3

Cmean is 0, variance is 1/2

Dmean is 1/3, variance is 1/3

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Suggested Answer: A

by Felix at May 09, 2022, 07:49 PM

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