Standard Error of Estimate

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Standard Error of Estimate (symbol S) </dt>
A measure of the dispersion (scatter) of data points with respect to a curve of regression. S is the positive square root of the arithmetic mean of the squares of the deviations from a curve of regression:

Missing Image:img src="SP7_s_files/stderr.gif"

where d is deviation from R ; R is curve of regression; and n is number of points. </dd>
S is a measure of the variation to be expected in making predictions from the regression equation. [[/a>|/a> ]]

References

This article is based on NASA's Dictionary of Technical Terms for Aerospace Use