a graph of amplitude as a function of frequency for all the sine waves that comprise a Fourier analysis of an image. [Jean Baptiste Joseph Fourier]

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November 24th 2024

regression sum of squares

(symbol: SS_regression) a number indicating the amount of variance in a dependent variable that can be explained by the variance in one or more associated independent variables. It thus describes how well a particular model fits the observed data. For example, in linear regression it is used to calculate a coefficient of determination or a coefficient of multiple determination, and in analysis of variance it is used to determine the total sum of squares and calculate an F ratio. Compare error sum of squares.