Suppose the random variable distribution of a random variable X is as follows:

X = x_{i} |
P(x = x_{i}) |

x_{1} x _{2} x _{3} . . . x _{n} |
P_{1} P _{2} P _{3} . . . P _{n} |

Then, Arithmetic Mean μ =

Variance σ^{2} =

Standard Deviation σ =