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Yates’s correction for continuity

an adjustment made to a chi-square test of data from a contingency table having only two columns and two rows of information. The Yates’s correction yields a more conservative chi-square statistic and improves the test’s accuracy by accounting for the fact that it uses a continuous distribution to approximate a discrete distribution. [Frank Yates (1902–1994), British statistician]

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June 17th 2024