Hi there:
I am looking for any test to evaluate the normality for a data set in Possion..
Thanks
Do you mean "Is there a test to determine whether data are Poisson distributed?" (You can't check for "normality" unless you think the data are normally distributed.)
If so, the answer is yes. You can fit a Poisson distribution to the data and examine the goodness of fit statistics.
I don't understand the question. If the data are Poisson, then why test for normality? Maybe you are wondering if you counts are large enough that the Poisson is adequately approximated by a normal distribution? If so, then use PROC UNIVARIATE and look a the output for tests for normality.
proc univariate data=... normal;
var y;
run;
Do you mean "Is there a test to determine whether data are Poisson distributed?" (You can't check for "normality" unless you think the data are normally distributed.)
If so, the answer is yes. You can fit a Poisson distribution to the data and examine the goodness of fit statistics.
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