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__both__[itex]x[/itex] and [itex]y[/itex]? I know that you can use the Weights command to incorporate the uncertainties on the [itex]y[/itex] values, but I don't know how to get the [itex]x[/itex] uncertainties in there as well.

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- Thread starter Screwdriver
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The Electrician

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both[itex]x[/itex] and [itex]y[/itex]? I know that you can use the Weights command to incorporate the uncertainties on the [itex]y[/itex] values, but I don't know how to get the [itex]x[/itex] uncertainties in there as well.

You need to read up on "errors in variables":

http://www.wavemetrics.com/products/igorpro/dataanalysis/curvefitting/errorsinvariables.htm

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