Re: Chi-square test

[Brian_Gaulke@hc-sc.gc.ca]

The values below actually correspond to 90% and 98%.

Brian R. Gaulke, CHP
brian_gaulke@hc-sc.gc.ca





"James Tracy" <james.tracy@nist.gov> on 99/08/17 09:51:53

Please respond to radsafe@romulus.ehs.uiuc.edu

To:   Multiple recipients of list <radsafe@romulus.ehs.uiuc.edu>
cc:    (bcc: Brian Gaulke)

Subject:  Chi-square test




This can be looked up in most statistics books.

For 10 counts @95% probability the chi square should range from 3.33 to 16.9
              @99% probability the chi square should range from 2.09 to 21.7

Jim Tracy
NIST
email: james.tracy@nist.gov

---------------------------

> We use the chi-squared test on 10 sequential readings to check the
> stability of a wipe counter (Ludlum 2929.)  What do people consider
> acceptable results from this test?
>


************************************************************************
The RADSAFE Frequently Asked Questions list, archives and subscription
information can be accessed at http://www.ehs.uiuc.edu/~rad/radsafe.html






************************************************************************
The RADSAFE Frequently Asked Questions list, archives and subscription
information can be accessed at http://www.ehs.uiuc.edu/~rad/radsafe.html