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From |
Steven Samuels <sjhsamuels@earthlink.net> |

To |
statalist@hsphsun2.harvard.edu |

Subject |
Re: st: Measure of Variability in a Nominal Variable |

Date |
Mon, 3 Mar 2008 20:51:38 -0500 |

Agresti wrote (at least) two books on categorical data and there are several statistics similar to the one you describe (though it is not a probability, as Maarten pointed out. So... which book and which statistic?

-Steven

On Mar 3, 2008, at 5:52 PM, Maarten buis wrote:

--- Kevin Daley <kevin.daley@mail.mcgill.ca> wrote:

I would like to use a statistic discussed by Agresti in his

categorical data analysis book that gives the probability that two

randomly selected independent observations in a given dataset will

end up in different categories of the given variable. The

statistic has a minimum value of 0 and a maximum value of J-1.

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**References**:**Re: st: Measure of Variability in a Nominal Variable***From:*Maarten buis <maartenbuis@yahoo.co.uk>

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