Description Usage Arguments See Also Examples
Skip wasted object summary steps computed by base R when computing covariance matrices and standard errors of common model objects.
1 2 3 4 5 6 7 8 9 |
object |
A fitted model object. |
... |
Additional arguments for method functions. For the |
dispersion |
The dispersion parameter for the family used. Either a single numerical value or |
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 | # data taken from ?lm
ctl = c(4.17,5.58,5.18,6.11,4.50,4.61,5.17,4.53,5.33,5.14)
trt = c(4.81,4.17,4.41,3.59,5.87,3.83,6.03,4.89,4.32,4.69)
group = gl(2, 10, 20, labels = c("Ctl","Trt"))
weight = c(ctl, trt)
reg_lm = lm(weight ~ group)
Vcov(reg_lm)
se(reg_lm)
# data taken from ?glm
counts = c(18,17,15,20,10,20,25,13,12)
outcome = gl(3,1,9)
treatment = gl(3,3)
reg_glm = glm(counts ~ outcome + treatment, family = poisson)
Vcov(reg_glm)
se(reg_glm)
|
(Intercept) groupTrt
(Intercept) 0.04849583 -0.04849583
groupTrt -0.04849583 0.09699167
(Intercept) groupTrt
0.2202177 0.3114349
(Intercept) outcome2 outcome3 treatment2 treatment3
(Intercept) 0.02920635 -1.587302e-02 -1.587302e-02 -2.000000e-02 -2.000000e-02
outcome2 -0.01587302 4.087301e-02 1.587302e-02 -9.352656e-18 -9.264149e-18
outcome3 -0.01587302 1.587302e-02 3.714961e-02 -9.415427e-18 -1.112732e-17
treatment2 -0.02000000 -9.352656e-18 -9.415427e-18 4.000000e-02 2.000000e-02
treatment3 -0.02000000 -9.264149e-18 -1.112732e-17 2.000000e-02 4.000000e-02
(Intercept) outcome2 outcome3 treatment2 treatment3
0.1708987 0.2021708 0.1927423 0.2000000 0.2000000
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