butterfat.df: Butterfat Data

Description Format Source References


This data gives the mean percentage of butterfat produced by different Canadian pure-bred diary cattle. There are five different breeds and two age groups, two years old and greater than five years old. For each combination of breed and age, there are measurements for 10 cows.


A data frame with 100 observations on 3 variables.

[,1] Butterfat numeric Mean percentage of butterfat per cow
[,2] Breed factor Breed (ayrshire, canadian, guernesy, holst.fres, jersey)
[,3] Age factor Age group (2yo, mature)


A Handbook of Small Data Sets


Hand, D.J., Daly, F., Lunn, A.D., McConway, K.J. \& Ostrowski, E. (1994). A Handbook of Small Data Sets. Boca Raton, Florida: Chapman and Hall/CRC.

Sokal, R.R. \& Rohlf, F.J. (1981). Biometry, 2nd edition. San Francisco: W.H. Freeman, 368.

s20x documentation built on Aug. 23, 2021, 9:15 a.m.

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