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Bernard Liengme Bernard Liengme is offline
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Default How do I fit a sigmoidal curve to data on a chart?

Using Solver. I show the use of Solver to fit a function at
http://people.stfx.ca/BLIENGME/ExcelTips/Elisa.mht
with sample worksheet.
If you wish, you may send me (get my email address from my website) a file
with data and the function to be fitted
best wishes
--
Bernard Liengme
MVP Excel
http://people.stfx.ca/bliengme

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