Typical regression methods use least square methods to find a best fit to scattered data in the form of y=f(x). This spreadsheet uses similar least square methods to fit a circle to a set of X, Y data amd calculates the centroid and radius that best fits that data. Uses are in the Steel Industry for measurement of roll wear, and in metrology and microwave measurement.
Mathematical Regression Methods
Least Square Methods To Fit a Circle
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