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The following material provides examples and demonstrations for the chi-square test.
- Using chi-square to evaluate the three door data.
- Looking at the sampling distribution of chi-square when the null hypothesis is false. This is the same as the previous entry, except that the emphasis is on replication of the experiment to track multiple values of chi-square (obt).
- A good example of a 2 × 2 contingency table can be found in the Testosterone study by Dabbs and Morris (1991).
- Using SPSS to calculate chi-square without entering data for every case.
Additional material expanding on the coverage in either of the texts is available in a short page I wrote in answer to a query from a student. It deals with the situation in which the levels of one or both of the variables are at least ordinal. This paper can be found at Ordinal Chi-square.
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Last revised: 3/7/2009