{"Entry":{"collection":"func","key":"regr-sxx","name":"regr_sxx","aliases":[],"metadata":{"changed_in":[],"changes":[{"descriptions_changed":false,"doc_overhaul":false,"from":"8.1","group_changed":null,"signatures":{"added":[],"removed":[]},"status":"added","to":"8.2"},{"descriptions_changed":true,"doc_overhaul":false,"from":"9.6","group_changed":null,"signatures":{"added":[],"removed":[]},"status":"changed","to":"10"},{"descriptions_changed":false,"doc_overhaul":true,"from":"12","group_changed":null,"signatures":{"added":[],"removed":[]},"status":"changed","to":"13"}],"content_hash":"fbe49ef0c340107d6222a5661f9fde5e5113eec3aa5f0b095a43bf5302ea1458","first_version":"8.2","group":"aggregate","group_label":"Aggregate Functions","groups":["aggregate"],"imported_at":"2026-09-27T17:57:28.956479+08:00","last_version":"20","name":"regr_sxx","name_key":"regr_sxx","position":21045,"present_in":["8.2","8.3","8.4","9.0","9.1","9.2","9.3","9.4","9.5","9.6","10","11","12","13","14","15","16","17","18","19","20"],"signature":"regr_sxx ( Y double precision, X double precision ) → double precision","signature_count":1,"slug":"regr-sxx","source_rev":"b7bd9cda","summary":"Computes the “sum of squares” of the independent variable, sum(X^2) - sum(X)^2/N.","summary_zh":""}},"Definition":{"Collection":"func","Key":"regr-sxx","SourceDatabase":"center","Version":"18","SourceTable":"func","SourceKey":"regr-sxx","SourceRevision":"b7bd9cda","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":"","description_zh_html":"","doc":{"anchor":"FUNCTIONS-AGGREGATE-STATISTICS-TABLE","file":"functions-aggregate.html","slug":"18"},"group":"aggregate","group_label":"Aggregate Functions","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) - 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":"","description_zh_html":"","examples":[],"html":"\u003ccode class=\"function\"\u003eregr_sxx\u003c/code\u003e ( \u003cem class=\"parameter\"\u003e\u003ccode\u003eY\u003c/code\u003e\u003c/em\u003e \u003ccode class=\"type\"\u003edouble precision\u003c/code\u003e, \u003cem class=\"parameter\"\u003e\u003ccode\u003eX\u003c/code\u003e\u003c/em\u003e \u003ccode class=\"type\"\u003edouble precision\u003c/code\u003e ) → \u003ccode class=\"returnvalue\"\u003edouble precision\u003c/code\u003e","returns":"double precision","text":"regr_sxx ( Y double precision, X double precision ) → double precision","zh_from":""}],"zh_from":""},"ManualEvidence":{"doc":{"anchor":"FUNCTIONS-AGGREGATE-STATISTICS-TABLE","file":"functions-aggregate.html","slug":"18"}},"MeasuredEvidence":{}},"Text":{"Collection":"func","Key":"regr-sxx","SourceDatabase":"pgweb","Version":"18","Locale":"zh-Hans","Title":"regr_sxx","Summary":"计算自变量的“平方和”，即sum(X^2) - sum(X)^2/N。","BodyHTML":"计算自变量的\u003cspan\u003e“\u003cspan\u003e平方和\u003c/span\u003e”\u003c/span\u003e，即\u003ccode\u003esum(\u003cem\u003e\u003ccode\u003eX\u003c/code\u003e\u003c/em\u003e^2) - sum(\u003cem\u003e\u003ccode\u003eX\u003c/code\u003e\u003c/em\u003e)^2/\u003cem\u003e\u003ccode\u003eN\u003c/code\u003e\u003c/em\u003e\u003c/code\u003e。\u003cpre\u003eregr_sxx ( Y double precision, X double precision ) → double precision\u003c/pre\u003e计算自变量的\u003cspan\u003e“\u003cspan\u003e平方和\u003c/span\u003e”\u003c/span\u003e，即\u003ccode\u003esum(\u003cem\u003e\u003ccode\u003eX\u003c/code\u003e\u003c/em\u003e^2) - sum(\u003cem\u003e\u003ccode\u003eX\u003c/code\u003e\u003c/em\u003e)^2/\u003cem\u003e\u003ccode\u003eN\u003c/code\u003e\u003c/em\u003e\u003c/code\u003e。","SourceRevision":"ca936764","ContentHash":"07edd15ffd07ff195d568961a97f073a5ae00176823c5394780bd3f103b5461b","Payload":{"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。","signatures":[{"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。","returns":"double precision","text":"regr_sxx ( Y double precision, X double precision ) → double precision","zh_from":"doc"}],"zh_from":"doc"}},"RequestedLocale":"zh-Hans","Fallback":false,"Versions":["10","11","12","13","14","15","16","17","18","19","20","8.2","8.3","8.4","9.0","9.1","9.2","9.3","9.4","9.5","9.6"],"Locales":["en","zh-Hans"],"Signatures":[{"Version":"18","Ordinal":0,"Hash":"7d659587fc447c0f6095ade5475ad385fa8d33d51e1a4948df59546a7b4b0410","Text":"regr_sxx ( Y double precision, X double precision ) → double precision","Returns":"double precision","Payload":{"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":"","description_zh_html":"","examples":[],"html":"\u003ccode class=\"function\"\u003eregr_sxx\u003c/code\u003e ( \u003cem class=\"parameter\"\u003e\u003ccode\u003eY\u003c/code\u003e\u003c/em\u003e \u003ccode class=\"type\"\u003edouble precision\u003c/code\u003e, \u003cem class=\"parameter\"\u003e\u003ccode\u003eX\u003c/code\u003e\u003c/em\u003e \u003ccode class=\"type\"\u003edouble precision\u003c/code\u003e ) → \u003ccode class=\"returnvalue\"\u003edouble precision\u003c/code\u003e","returns":"double precision","text":"regr_sxx ( Y double precision, X double precision ) → double precision","zh_from":""}}],"Spellings":null,"SQLState":null,"Evidence":null}