Re: [Phys-L] weighted linear regression using spreadsheets

[bernard cleyet <bernard@cleyet.org>]

> On 2020/Apr/03, at 09:17, John Denker via Phys-l <phys-l@mail.phys-l.org> wrote:
>
> > Whether the scale (ordinate) is linear of log, the fit is the same.
>
> Really?  I must be misunderstanding that sentence, because I
> don't see how it could be true.  Scaling the data has a huge
> effect on the weights.  Indeed this is an arcane but effective
> way of controlling the weights, if that's what you want, as
> discussed below.


Here’s an example of what I meant:  http://cleyet.org/covid-19/log-lin-fits/  



bc   thinks he didn’t “scale" the data, just placed them on the graph differently.   Evidently is in a "teachable moment”.