Re: [Gnuplot-info] sum of squares of residuals

[Hans-Bernhard B. <HBB...@t-...>]

Am 02.08.2018 um 22:17 schrieb Patrick Dupre:

> When I do not weight my data, I get the following
> final sum of squares of residuals : 1.85937
> 
> but, when I weight my data, I get:
> final sum of squares of residuals : 54.6063
> 
> The big difference between the 2 values of the Chi2 indicates me that the
> weighting of the data is not entirely correct.

That differences can indicate so many different things, all by itself, 
that it effectively indicates nothing at all.

> When the data are weighted, if \Sum w(i) = 1, I must get a
> similar Chi2.

Even that's not true, because the solution can still be a different one, 
yielding a wildly different WSSR.

> How can I get the "weighted final sum of squares of residuals"?

You're already getting it.