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

[Christofer Bogaso]

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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