crabs data frame has 200 rows and 8 columns, describing 5
morphological measurements on 50 crabs each of two colour forms and
both sexes, of the species Leptograpsus variegatus collected at
Fremantle, W. Australia.
This data frame contains the following columns:
"O" for blue or orange.
as it says.
1:50 within each of the four groups.
frontal lobe size (mm).
rear width (mm).
carapace length (mm).
carapace width (mm).
body depth (mm).
Campbell, N.A. and Mahon, R.J. (1974) A multivariate study of variation in two species of rock crab of genus Leptograpsus. Australian Journal of Zoology 22, 417–425.
Venables, W. N. and Ripley, B. D. (2002) Modern Applied Statistics with S. Fourth edition. Springer.
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