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21-8. Regression

21-8-1. Curve Fitting

In statistics, curve fitting, the fitting of a curve to a set of data points, is called regression. The fitting of a straight line to data points is called linear regression, while the fitting of some other curve is called nonlinear regression. Fitting a curve to two sets of data is called multiple regression. We will cover linear regression in this section.

NOTE

The word regression was first used in the nineteenth century when these methods were used to determine the extent by which the heights of children of tall or short parents regressed or got closer to the mean height of the population.


  

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