Discrete Distributions Key Concepts (Bb)

# Discrete Distributions Key Concepts (Bb) - n x p p x n x n...

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Key Concepts of Discrete Probability Distributions Binomial distribution The chance or probability of the number x of “successes” in n trials or in a sample of size n , when the chance of success any single time is p , is: Need as input data n , x , p . These are always given in the problem, either the set-up paragraph or the questions. Binomial expected value E ( X ) = n × p Binomial standard deviation σ = np (1 – p ) Discrete Distributions Key Concepts 1 of 2 © 2008 Harvey Singer ( 29 ( 29 ( 29 x

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Unformatted text preview: n x p p x n x n p , n | x X Prob---= = 1 ! ! ! Poisson distribution The chance or probability of x occurrences in an interval, in which μ occurrences are expected is: Need as input data x , μ . These are always given in the problem, either the set-up paragraph or the questions. Poisson expected value E ( X ) = μ Poisson standard deviation σ = √μ Discrete Distributions Key Concepts 2 of 2 © 2008 Harvey Singer ( 29 ! x e | x X Prob x μ = μ = μ-...
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## This note was uploaded on 01/26/2011 for the course OM 210 taught by Professor Singer during the Fall '08 term at George Mason.

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Discrete Distributions Key Concepts (Bb) - n x p p x n x n...

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