butterfat: Butterfat and dairy cattle
In GLMsData: Generalized Linear Model Data Sets
butterfat R Documentation
Butterfat and dairy cattle
Description
The average butterfat content for dairy cattle
Usage
data(butterfat)
Format
A data frame with 100 observations on the following 3 variables.
Butterfatthe average butterfat percentage;
a numeric vector
Breedthe cattle breed;
a factor with levels Ayrshire, Canadian,
Guernsey, Holstein-Fresian and Jersey
Agethe age of the cow;
a factor with levels 2year and Mature
Details
The data give the average butterfat content (percentages)
for random samples of twenty cows
(ten two-year old and ten mature (greater than four years old))
from each of five breeds.
The data are from Canadian records of pure-bred dairy cattle.
Source
D. J. Hand, F. Daly, A. D. Lunn, K. J. McConway, and E. Ostrowski (1994)
A Handbook of Small Data Sets, London: Chapman and Hall.
Dataset 23.
R. R. Sokal and F. J. Rohlf (1981)
Biometry, 2nd edition, San Fransisco: WH Freeman.
Examples
data(butterfat)
summary(butterfat)
GLMsData documentation built on Aug. 22, 2022, 9:10 a.m.
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| butterfat | R Documentation |
Butterfat and dairy cattle
Description
The average butterfat content for dairy cattle
Usage
data(butterfat)
Format
A data frame with 100 observations on the following 3 variables.
Butterfatthe average butterfat percentage; a numeric vector
Breedthe cattle breed; a factor with levels
Ayrshire,Canadian,Guernsey,Holstein-FresianandJerseyAgethe age of the cow; a factor with levels
2yearandMature
Details
The data give the average butterfat content (percentages) for random samples of twenty cows (ten two-year old and ten mature (greater than four years old)) from each of five breeds. The data are from Canadian records of pure-bred dairy cattle.
Source
D. J. Hand, F. Daly, A. D. Lunn, K. J. McConway, and E. Ostrowski (1994) A Handbook of Small Data Sets, London: Chapman and Hall. Dataset 23.
R. R. Sokal and F. J. Rohlf (1981) Biometry, 2nd edition, San Fransisco: WH Freeman.
Examples
data(butterfat) summary(butterfat)
R Package Documentation
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Note that we can't provide technical support on individual packages. You should contact the package authors for that.
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