Description Usage Format Source Examples
Brain size (lnbrain
) and body mass (lnmass
) in Neanderthals and early modern humans (species
).
1 |
A data frame with 39 observations on the following 3 variables.
ln.mass
log of body mass (kg)
ln.brain
log of brain size
species
a factor with levels neanderthal
recent
Ruff, C.B., E. Trinkaus, and T.W. Holliday. 1997. Body mass and encephalization in Pleistocene Homo. Nature 387: 173-176.
1 2 | data(NeanderthalBrains)
xyplot(ln.brain ~ ln.mass, data=NeanderthalBrains, groups=species)
|
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