regr_syy()

Computes the “sum of squares” of the dependent variable, sum(Y^2) - sum(Y)^2/N.

Signature

regr_syy ( Y double precision, X double precision ) → double precision

Examples

SELECT regr_syy(amount, quantity) FROM orders;

   regr_syy   
--------------
 133129.96875
(1 row)

Run against PostgreSQL 18.6 on 2026-09-13. This is the output we got, not the documentation’s.

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