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Acronyms that contain the term residual sum of squares 

What does residual sum of squares mean? This page is about the various possible meanings of the acronym, abbreviation, shorthand or slang term: residual sum of squares.

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PRESS

Prediction Residual Error Sum of Squares

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URSS

Unrestricted Residual Sum of Squares

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What does residual sum of squares mean?

Residual sum of squares
In statistics, the residual sum of squares (RSS), also known as the sum of squared residuals (SSR) or the sum of squared estimate of errors (SSE), is the sum of the squares of residuals (deviations predicted from actual empirical values of data). It is a measure of the discrepancy between the data and an estimation model. A small RSS indicates a tight fit of the model to the data. It is used as an optimality criterion in parameter selection and model selection. In general, total sum of squares = explained sum of squares + residual sum of squares. For a proof of this in the multivariate ordinary least squares (OLS) case, see partitioning in the general OLS model.

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