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polynomial regression

polynomial regression Polynomial regression is a type of multiple regression that predicts an outcome using different powers of the same predictor variable rather than adding different predictor variables.

Polynomial regression is a type of multiple regression that predicts an outcome using different powers of the same predictor variable rather than adding different predictor variables. For example, it may use X, X squared, and X cubed together to estimate Y.

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Sources

Drafting source: Online Statistics Education, version 2 (David M. Lane, project leader). Version 2; publisher statement snapshot 2026-10-18; SHA-256 0dcad9ee85f61f9e2bb24d26279de155ac749164ea4da2a3bffeabcf9ea471a6. “Polynomial Regression” (polynomial_regression.html).
public-domain-US · Definition uses new wording; original source retains its stated licence. · Source snapshot SHA-256: c49468be7650fa349aefd902c6749ec07c64c5d70e1fe83e2c5ee8eca59930fa

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PsychTerms (psychterms.org), CC BY 4.0, version 1. “polynomial regression.” Development preview.

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