# Discrete Probability Distributions

See attached file - Formulas for Discrete Probability Distributions

A discrete random variable can have the values, x = 3, x = 8, or x = 10, and the respective probabilities are 0.2, 0.7, and 0.1. Determine the mean, variance, and standard deviation of x.

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https://brainmass.com/statistics/probability/formulas-discrete-probability-distributions-339117

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Answers

X P (X) X * P (X) X - 7.2 (X - 7.2)^2 (X - 7.2)^2 * P ...

#### Solution Summary

The solution provides step by step method for the calculation of mean, variance and standard deviation of a discrete probability distribution. Formula for the calculation and Interpretations of the results are also included.

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