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st: RE: fit chi distribution to continuos variable
From
"Feiveson, Alan H. (JSC-SK311)" <[email protected]>
To
"[email protected]" <[email protected]>
Subject
st: RE: fit chi distribution to continuos variable
Date
Thu, 1 Sep 2011 12:04:53 -0500
Andreas - By a "chi" distribution. do you mean your data are distributed as the square root of a chi-squared random variable? If so , you can just square your values and fit to a gamma or chi-squared distribution using -gammafit- as discussed in the last few days on this list.
To generate random values after you get the gamma or chi-squared parameters, just use -rgamma_ and take the square root.
Al Feiveson
-----Original Message-----
From: [email protected] [mailto:[email protected]] On Behalf Of Andreas Fagereng
Sent: Thursday, September 01, 2011 11:56 AM
To: [email protected]
Subject: st: fit chi distribution to continuos variable
Dear Listers,
I have a continuos variable, that plotted as a histogram looks
something like a chi-distribution.
Is there a way to get stata to fit such a distribution to my data,
e.g. so that i can draw new numbers from distribution later?
Best
Andreas
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