Description Usage Format Details Source References Examples
Data on measurements from females of two species of voles, Microtus californicus and M. ochrogaster
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A data frame with 86 observations with a factor denoting the species and a further seven variables describing various measurements in units of 0.1mm.
Species
a factor with levels californicus
ochrogaster
Age
Age in Days
L2.Condylo
Condylo incisive length
L9.Inc.Foramen
Incisive foramen length
L7.Alveolar
Alveolar length of upper molar tooth row
B3.Zyg
Zygomatic width
B4.Interorbital
Interoribital width
H1.Skull
Skull height
The letter-number at the start of the variable name refers to the variable names used by the authors in the original publication.
Airoldi, J.-P. and R.S. Hoffmann (1984) "Age variation in volves (Microtus californicus, M. ochrogaster) and its significance for systematic studies" Occasional papers of the Museum of Natural History, University of Kansas, Lawrence KS 111:1-45
Flury, B.D. (1997) A First Course in Multivariate Statistics, New York: Springer
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