
Arithmetic and Geometric Series: summation formulas, financial examples expected value, variance and standard deviation, probability distri- Calculate the expected value E(X), the variance σ2 = Var(X), and the standard. seconds) Probability Distribution of a Discrete Random Variable The formula for the expected value is the same as the formula for. The probability density function of a matrix variate elliptically contoured distribution possesses some interesting properties which are presented in.