Hello Thierry,
thanks for your answer! There is one thing, however, that I don't
understand. The values labeled "B" in my data are generated with
1/20th the variance of the others, yet the standard error and
confidence intervals are the same for all levels of the factor. How
come?
> summary(mod_lm0)$coef
Estimate Std. Error t value Pr(>|t|)
LabelA 10.10138 0.3937038 25.65730 5.752714e-93
LabelB 19.79629 0.3937038 50.28218 1.226942e-196
LabelC 30.06722 0.3937038 76.37016 4.825571e-276
LabelD 40.01442 0.3937038 101.63586 0.000000e+00
LabelE 49.78282 0.3937038 126.44738 0.000000e+00
Thanks,
robert
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