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Open Source Statistics for Public HealthDocumentationTestingAboutHelp

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Author(s)
Statistics and Interface
Andrew G. Dean and Kevin M. Sullivan
R by C Table
Use this table to test for an association between variables with more than 2 values, for example 3 diseases and 3 blood types. The result is a chi square testing whether the results differ from those expected from the marginal sums alone. Further testing may be necessary to localize a significant finding, using either a subset in this table or the TwobyTwo statistics.

Criteria are evaluated to see if the chi square result can be accepted, as chi square is not reliable for small expected values.

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