In statistics, Yates' correction for continuity (or Yates' chi-squared test) is used in certain situations when testing for independence in a contingency table. In some cases, Yates' correction may adjust too far, and so its current use is limited.
Define 2)
A correction for the discreteness of the data that is made in the chi-square test when the number of cases in any class is small and there is one degree of freedom
Define 3)
Yate’s correction, also known as Yate’s chi-squared test, is used to test independence of events in a cross table i.e. a table showing frequency distribution of variables. It is used to test if a number of observations belonging to different categories validate a null hypothesis. It is a correction made to chi-square values in a binomial frequency distribution table.
Formula : XYates2 = ?( | Oi –Ei | - 0.5)2/Ei
These tests are commonly used in diagnostics, environmental sciences, biology, etc.
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