Which of the following statements is correct (circle one answer)? A. A random variable is a...
Which of the following statements is correct (circle one answer)?
A. A random variable is a subset of the sample space.
B. The expected value of a random variable measures the variability of the random variable.
C. If a discrete random variable has three possible values 1, 2, and 3, then its expected value has to be one of these three values.
D. If the set of possible values of a random variable is {-17, 0, 1.4, 5000} then it is a discrete random variable.
Homework Answers
From the given statements the correct statement is
A) the random variable is subset of sample space.
Becouse for statements
B) variability in the random variable is measured by the varience.
C) expected value of discrete random variables may be fraction.
D) by just having look of set of possible values of random variables we cant say that random variable is discrete or continuous.
Hence option A) is correct.
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