Statistical - Cubic Regression (Cubic Spline Fit) ?

[jonmoore]

(06-02-2022 06:01 AM)Werner Wrote:  

(05-31-2022 08:24 AM)jonmoore Wrote:  (..) I often find that a cubic spline regression provides the best fit, for the data I'm analysing.

You left out the one thing jonmoore was talking about, Thomas; cubic spline regression, fitting data to 3-4-5 cubic splines, depending on the number of data points (potentially hundreds, thousands).
Werner

A modern statistical analysis program delivers this functionality by choosing the appropriate control points from those available in the scatter plot so that the interpolated curve best describes the average of the data points.

Here's another reference source, in this case, a statistical analysis library for .NET.

https://www.extremeoptimization.com/Docu...lines.aspx