Chi-Square Test and Counting Statistics

["Denis J. Rinkacs, Jr." <dr4i@MAIL1.andrew.cmu.edu>]

All,

I am looking for a good definition and examples of Chi-square tests and 
its applications.  The math is easy, but I'm having a hard time 
understanding what the Chi-square number is telling me and what is a 
good Chi-square number and what is a bad Chi-square number.  Good 
references would be a appreciated.

Also, if I do a chi-square determination with a Tc99 source for betas 
and a Th230 source for alphas, should I do daily reliability checks 
with a Pb210 source?

Thanks in advance.

Denny

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Denis J. Rinkacs, Jr.
Radiation Safety Officer
Carnegie Mellon University
412-268-3221
412-268-6976 Fax
dr4i@MAIL1.andrew.cmu.edu