I want to know how to determine (or where to get) the critical values for the chi-square distribution when the degrees freedom are more than 100? The tables that are available for the chi-square values, only have up to 100 Df. I found an equation online on how to determine χ2 for more than 100 Df, but I am not sure how correct this is.
Any suggestions and answers regarding this will be appreciated.
Regards
Try to use Microsoft Excel.
http://statistics.about.com/od/StatisticsSoftware/a/Chi-square-In-Excel.htm
One more:
For n>100 the chi-square value is approximately normal distributed with expected value n and variance 2n.
So you can use the normal distribution to get good approximations for the critical values (I would guess that Excel uses this approximation internally for n>100 [or already for lower n] anyway).
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