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I did a quick search but could not find this in the forums.

I have quite a basic situation. I have been gathering data points from an experiment and was able to fit an exponential curve of best fit to it. What I want to do is approximate some values between my data points using this curve. My approach is to just use the equation of the curve and plug in the desired number. I will then add the uncertainty to it.

This uncertainty is what I am drawing a blank with. Does anyone know what method I could use to calculate this uncertainty. I have a feeling this is really simple, but... I cant remember anything yet.

Any help would be appreciated.

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# Error on using a curve of best fit for extrapolation

**Physics Forums | Science Articles, Homework Help, Discussion**