Answer to Question #164978 in Statistics and Probability for Policarpio

Question #164978

What is the variance of the discrete random variable?


1
Expert's answer
2021-02-24T13:51:14-0500

variance of the discrete random variable the difference between the values of a random variable and its mathematical expectationVar(X)=i=1nxi2pi(i=1nxipi)2\text{variance of the discrete random variable the difference between}\newline \text{ the values of a random variable and its mathematical expectation}\newline Var(X)=\sum_{i=1}^{n}{x_i^2 \cdot p_i}-\left(\sum_{i=1}^{n}{x_i \cdot p_i} \right)^2



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