Question: cm), whichisameasureofitssize,and color (1 = dark, 2 = medium, 3 = light),whichisa measure ofadultage,darkeronesbeingolder. > summary(lm(SpermTotal~CW+factor(Color), data=Crabs2)) Estimate Std.ErrortvaluePr(>|t|) (Intercept) 11.3660.63817.822 <2e-16 CW

cm), whichisameasureofitssize,and color (1 = dark, 2 = medium, 3 = light),whichisa measure ofadultage,darkeronesbeingolder.

> summary(lm(SpermTotal~CW+factor(Color), data=Crabs2))
Estimate Std.ErrortvaluePr(>|t|)
(Intercept) 11.3660.63817.822<2e-16 CW

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