The term chi-square, chi-squared, or
has various uses in
statistics
Statistics (from German language, German: ', "description of a State (polity), state, a country") is the discipline that concerns the collection, organization, analysis, interpretation, and presentation of data. In applying statistics to a s ...
:
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chi-square distribution, a continuous probability distribution
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chi-square test, name given to some tests using chi-square distribution
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chi-square target models, a mathematical model used in radar cross-section
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