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Graphical Procedure for Fitting the Best Line to a Set of Points

J. L. Dolby
Technometrics
Vol. 2, No. 4 (Nov., 1960), pp. 477-481
DOI: 10.2307/1266455
Stable URL: http://www.jstor.org/stable/1266455
Page Count: 5
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Graphical Procedure for Fitting the Best Line to a Set of Points
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Abstract

This report provides a simple graphical procedure for obtaining the slope and intercept of the straight line of best fit to a set of points in two dimensions. The solution is obtained in the dual space (coordinate system) by use of mapping. Although this procedure is useful in itself for two dimensional problems, it may be even more useful as a teaching aid in illustrating some simple properties of mapping, dual spaces, the geometric meaning of an inverse, and the basic properties of curve fitting.

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