excel's curve-smoothing algorithm

  • Thread starter Thread starter zhytomir
  • Start date Start date
Z

zhytomir

I have some raw data in excel, with a smooth curve added. I am trying
to reproduce this curve on the same data in GraphPad Prism, with poor
results. Does anyone know how excel calculates curve smoothing?
 
As far as I can recall Microsoft uses a cubic spline but I have not seen the
exact formula.
Try Google with search term: excel spline
best wishes
 
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