Re: [math-fun] Curve-fitting methods ?

At 08:24 AM 9/23/2018, Richard Howard wrote:

If the physics of the problem leads one to suspect a power law (or exponential), it is tempting to fit a straight line on a log-log (or log-linear) plot in Excel.

This does not weight all points (and their uncertainties) properly.

I can imagine that the error bounds on measurement errors don't scale properly after taking logs, but if the measurement errors are small compared with the underlying process variation (assuming that it is, indeed, a power law), then the weighting shouldn't be that far off. Or is there some other issue that I'm missing here?