# Transforming a % variation of the mean from Poisson to σ

1. Jul 10, 2013

### Alkass

Hi!

I do have this problem - Consider that for a set of values, I do have a Poisson distribution with mean value <m> - Now, I need to gather another set of dataset, which I should vary the mean value by 5% - My question is, how can I translate each one of these new values to sigma deviations from the principal dataset , ie how to make a connection between the "varied" value and sigma deviations ?

Thanks

Alex

2. Jul 11, 2013

### chiro

Hey Alkass and welcome to the forums.

Can you show what you mean mathematically (in terms of random variables, probabilities, expectations, and variances)?