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sum(X)^2/N.","summary_zh":""}},"Definition":{"Collection":"func","Key":"regr-sxx","SourceDatabase":"center","Version":"18","SourceTable":"func","SourceKey":"regr-sxx","SourceRevision":"wiki-repair-20261023:5ed1ac482e333ded0c147cb69f4817f0763c56ceaa134dff113f6ddc6fe3ef8e","Facts":{"description":"Computes the “sum of squares” of the independent variable, sum(X^2) - sum(X)^2/N.","description_html":"Computes the \u003cspan class=\"quote\"\u003e“\u003cspan class=\"quote\"\u003esum of squares\u003c/span\u003e”\u003c/span\u003e of the independent variable, \u003ccode class=\"literal\"\u003esum(\u003cem class=\"parameter\"\u003e\u003ccode\u003eX\u003c/code\u003e\u003c/em\u003e^2) - sum(\u003cem class=\"parameter\"\u003e\u003ccode\u003eX\u003c/code\u003e\u003c/em\u003e)^2/\u003cem class=\"parameter\"\u003e\u003ccode\u003eN\u003c/code\u003e\u003c/em\u003e\u003c/code\u003e.","description_zh":"计算自变量的“平方和”，即 sum(X^2) - sum(X)^2/N。","description_zh_html":"计算自变量的\u003cspan class=\"quote\"\u003e“\u003cspan class=\"quote\"\u003e平方和\u003c/span\u003e”\u003c/span\u003e，即 \u003ccode class=\"literal\"\u003esum(\u003cem class=\"parameter\"\u003e\u003ccode\u003eX\u003c/code\u003e\u003c/em\u003e^2) - sum(\u003cem class=\"parameter\"\u003e\u003ccode\u003eX\u003c/code\u003e\u003c/em\u003e)^2/\u003cem class=\"parameter\"\u003e\u003ccode\u003eN\u003c/code\u003e\u003c/em\u003e\u003c/code\u003e。","doc":{"anchor":"FUNCTIONS-AGGREGATE-STATISTICS-TABLE","file":"functions-aggregate.html","sha256":"31d3dcd36ef353484b4b3535f9f0d1cc239c3910146257fe5178f99b90b501e2","slug":"18"},"documentation_revision":{"inputs":[{"file":"functions-aggregate.html","kind":"same-version-reviewed-manual","locale":"en","sha256":"31d3dcd36ef353484b4b3535f9f0d1cc239c3910146257fe5178f99b90b501e2","version":"18.7"},{"file":"functions-aggregate.html","kind":"same-version-reviewed-manual","locale":"zh-Hans","sha256":"0bf7506d27b71666fc74840a21a8f77c8a92735174f1d05033865961722e457c","version":"18.7"}],"release":"18.7","runtime_remeasured":false,"source_revision":"pgdoc:b9f0e7232f60f380d642ac9b99226606c254b552"},"group":"aggregate","group_label":"聚合函数","lang":"en","layout":"table-new","pages":["functions-aggregate.html"],"prose_only":false,"signatures":[{"description":"Computes the “sum of squares” of the independent variable, sum(X^2) - 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