Poisson Distribution: Doubling Time Effects

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SUMMARY

In a Poisson Distribution, when the time interval is doubled, the parameter lambda (λ) must also be adjusted accordingly. Specifically, if the original time period is one month with λ calculated as λ = np, then for a six-month period, λ should be multiplied by 6. This adjustment allows for accurate probability calculations of events occurring over the extended time frame.

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Hi, in a Poisson Distribution test, what happens when the amount of time is doubled?

For example, in 1 month, lamda=np and I can calculate the probability of x events happening in that 1month.

However, if the question is changed to 6 months, what will i have to do? Thanks.
 
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Just multiply lambda by 6 :smile:
 

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