Neas-Seminars

Question


http://33771.hs2.instantasp.net/Topic15760.aspx

By Ashwag - 3/5/2018 2:43:42 PM

Hi,

I have question regarding to  Poisson  and Binomial and Gamma.

Now, when the ratios of variance to mean  is approximately equal to 1, then we have Poisson.

when the ratios of standard deviation to mean ‌‌are approximately equal, then we have gamma.

what about binomial? it is not really clear.

In exam C, we learned that if the variance = mean , then we Poisson,  if variance < Mean , then we have binomial.

So, can you please verify .

Thanks‌‌‌‌‌‌‌‌
‌
By NEAS - 4/16/2018 7:12:40 PM

 
Ashwag - 3/5/2018 2:43:42 PM
Hi,

I have question regarding to  Poisson  and Binomial and Gamma.

Now, when the ratios of variance to mean  is approximately equal to 1, then we have Poisson.

when the ratios of standard deviation to mean ‌‌are approximately equal, then we have gamma.

what about binomial? it is not really clear.

In exam C, we learned that if the variance = mean , then we Poisson,  if variance < Mean , then we have binomial.

So, can you please verify .

Thanks‌‌‌‌‌‌‌‌
‌


NEAS: For a binomial distribution, the variance is proportional to p × (1 – p)