Contingency Table
by Kardi Teknomo
In the previous section, you have learn how to perform computation of descriptive statistics and frequency analysis from our questionnaire data.
[edit] The contingency table
Given a set S of N data points and two groupings (e.g. clusterings) of these points, namely and , ...
Because CHAID relies on the contingency tables to form its test of significance for each predictor all predictors must either be categorical or be coerced into a categorical form via binning (e.g.
Such a table is called a "contingency table". Not every rectangular table of numbers is a contingency table : the cells' contents have to be interpretable in terms of counts of something, so that adding the contents of all cells in a row, ...
Everitt, B. S. (1977). The analysis of contingency tables. London: Chapman & Hall.
Everitt, B. S. (1984). An introduction to latent variable models. London: Chapman and Hall.
Two common examples are the chi-square test for independence in an RxC contingency table and the chi-square test to determine if the standard deviation of a population is equal to a pre-specified value.
 See also: Distribution, Classification, Estimation, Variance, Regression
  
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