If the range of X is the set {0,1,2,3,4} and P(X ◊◊x) ◊◊0 2 . , determine the mean and variance of the random variable.

Solution:

Step 1 of 2:

Here we have to determine the mean and variance of the random variable.

Given the range of X = {0,1,2,3,4} and P(X= x) = 0.2.

Mean

= 2

Variance =

Where,

Then,

Variance =

= 2