[R] Extract estimate of error variance from glm() object

[Bert Gunter]

?deviance  ?anova

Bert

On Tue, Dec 24, 2024 at 6:22 AM Christofer Bogaso
<bogaso.christofer using gmail.com> wrote:
>
> I think vcov() gives estimates of VCV for coefficients.
>
> I want estimate of SD for residuals
>
> On Tue, Dec 24, 2024 at 7:24 PM Ben Bolker <bbolker using gmail.com> wrote:
> >
> > vcov(). ?
> >
> >
> > On Tue, Dec 24, 2024, 8:45 AM Christofer Bogaso <bogaso.christofer using gmail.com> wrote:
> >>
> >> Hi,
> >>
> >> I have below GLM fit
> >>
> >> clotting <- data.frame(
> >>     u = c(5,10,15,20,30,40,60,80,100),
> >>     lot1 = c(118,58,42,35,27,25,21,19,18),
> >>     lot2 = c(69,35,26,21,18,16,13,12,12))
> >> summary(glm(lot1 ~ log(u), data = clotting, family = gaussian))
> >>
> >> Is there any direct function to extract estimate of Error standard deviation?
> >>
> >> ______________________________________________
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> >> and provide commented, minimal, self-contained, reproducible code.
>
> ______________________________________________
> R-help using r-project.org mailing list -- To UNSUBSCRIBE and more, see
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> PLEASE do read the posting guide https://www.R-project.org/posting-guide.html
> and provide commented, minimal, self-contained, reproducible code.