Question
Economics Question on Probability
For a random variable X, it is given that E(X2)=16 and E(X) = 2. What is the value of variance for this distribution?
A
12
B
14
C
16
D
2
Answer
12
Explanation
Solution
The correct answer is (A) : 12
For a random variable X, it is given that E(X2)=16 and E(X) = 2. What is the value of variance for this distribution?
12
14
16
2
12
The correct answer is (A) : 12