Suppose the random variable distribution of a random variable X is as follows:
| X = xi | P(x = xi) |
| x1 x2 x3 . . . xn | P1 P2 P3 . . . Pn |
Then, Arithmetic Mean μ =
Variance σ2 =
Standard Deviation σ =
Arithmetic Mean, Variance and Standard Deviation of a Random Variable Distribution
Then, Arithmetic Mean μ =