Curve Fit Bench

Drop in x, y (and σy if you have it). Either let the bench search every model family for the lowest reduced χ², or type your own equations and have those fitted — both print the functional form with parameters, uncertainties and χ².

by Shivani Malvi & Satyajit Puhan
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x y
fit range x – y – drag across the plot to pick an x window
save the figure PNG and PDF save at 3× resolution

Every model tried ranked by reduced χ² — click a row to overlay it

plot#Modelreduced χ²χ²/NR²RMSEAICck
Parameter explorer

Uses the fit selected in the table above. Every other parameter stays at its fitted value, and the fitted curve is always drawn for reference. Pick one parameter, give it several values, and see how the curve moves against your data.

quick sets
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