darwin: Darwin's Maize Data
In SMPracticals: Practicals for Use with Davison (2003) Statistical Models
darwin R Documentation
Darwin's Maize Data
Description
The heights in eighths of inches of young maize plants put by Charles Darwin in
four pots. He planted 15 pairs of plants together, one of each pair being
cross-fertilised, and the other being self-fertilised.
Usage
data(darwin)
Format
A data frame with 30 observations on the following 4 variables.
- pot
a factor giving the pot
- pair
a factor giving the pair
- type
a factor giving the type of fertilisation
- height
height of plant in eighths of inches
Source
Fisher, R. A. (1935) Design of Experiments. Edinburgh: Oliver and Boyd. Page 30.
References
The original book is reprinted as part of
Fisher, R. A. (1990) Statistical Methods, Experimental Design,
and Scientific Inference. Oxford University Press.
Davison, A. C. (2003) Statistical Models. Cambridge University Press.
Page 2.
Examples
data(darwin)
attach(darwin)
plot(height~type)
anova(lm(height~pot+pair+type,data=darwin))
SMPracticals documentation built on May 29, 2024, 12:19 p.m.
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| darwin | R Documentation |
Darwin's Maize Data
Description
The heights in eighths of inches of young maize plants put by Charles Darwin in four pots. He planted 15 pairs of plants together, one of each pair being cross-fertilised, and the other being self-fertilised.
Usage
data(darwin)Format
A data frame with 30 observations on the following 4 variables.
- pot
a factor giving the pot
- pair
a factor giving the pair
- type
a factor giving the type of fertilisation
- height
height of plant in eighths of inches
Source
Fisher, R. A. (1935) Design of Experiments. Edinburgh: Oliver and Boyd. Page 30.
References
The original book is reprinted as part of Fisher, R. A. (1990) Statistical Methods, Experimental Design, and Scientific Inference. Oxford University Press.
Davison, A. C. (2003) Statistical Models. Cambridge University Press. Page 2.
Examples
data(darwin)
attach(darwin)
plot(height~type)
anova(lm(height~pot+pair+type,data=darwin))R Package Documentation
Browse R Packages
We want your feedback!
Note that we can't provide technical support on individual packages. You should contact the package authors for that.
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