# POISSON Binomial Dist.

Six Sigma – iSixSigma Forums Old Forums General POISSON Binomial Dist.

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• #45934

idiotinmath
Participant

What  is  the  relation between  both  dist.?

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#151061

The Force
Member

Poisson is for defects while Binomial is for defectives. Both are applied for proportions

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#151064

mZ
Participant

Generally speaking, Poisson distribution is based on rate measure (like number of defects per sq cm) whereas binomial distribution is based on proportion measure. But these two distributions are related: Poisson distribution can be simulated by binomial distribtution when the latter has large n and small p (eg. p<0.01). In choosing which distribution you should use, all you need to consider is which of the two distributions best fit your sample data distribution (or transformed sample data distribution).

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#151080

idiotinmath
Participant

thank you

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#151083

Mikel
Member

It’s p<0.1, not 0.01

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#151084

Idiotinmath.
Participant

Thank You

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