poissfit
Poisson parameter estimates
Syntax
lambdahat = poissfit(data)
[lambdahat,lambdaci] = poissfit(data)
[lambdahat,lambdaci] = poissfit(data,alpha)
Description
lambdahat = poissfit(data)
returns
the maximum likelihood estimate (MLE) of the parameter of the Poisson
distribution, λ, given the data data
.
[lambdahat,lambdaci] = poissfit(data)
also gives 95%
confidence intervals in lambdaci
.
[lambdahat,lambdaci] = poissfit(data,alpha)
gives 100(1 - alpha)
% confidence intervals.
For example alpha
= 0.001
yields
99.9% confidence intervals.
The sample mean is the MLE of λ.
Examples
r = poissrnd(5,10,2); [l,lci] = poissfit(r) l = 7.4000 6.3000 lci = 5.8000 4.8000 9.1000 7.9000
Version History
Introduced before R2006a