ex0221: Bumpus's Data on Natural Selection (Weight)
In Sleuth2: Data Sets from Ramsey and Schafer's "Statistical Sleuth (2nd Ed)"
ex0221 R Documentation
Bumpus's Data on Natural Selection (Weight)
Description
As evidence in support of natural selection, Bumpus presented
measurements on house sparrows brought to the Anatomical Laboratory of
Brown University after an uncommonly severe winter storm. Some of
these birds had survived and some had perished. Bumpus asked whether
those that perished did so because they lacked physical
characteristics enabling them to withstand the intensity of that
particular instance of selective elimination. The data are on the
the weights, in grams, for the 24 adult male sparrows that perished and
for the 35 adult males that survived.
Usage
ex0221
Format
A data frame with 59 observations on the following 2 variables.
Weightweight of adult male sparrows (in grams)
Statusfactor variable indicating whether the sparrow
perished or survived in a winter storm
Source
Ramsey, F.L. and Schafer, D.W. (2002). The Statistical Sleuth: A
Course in Methods of Data Analysis (2nd ed), Duxbury.
See Also
case0201, ex2016
Examples
str(ex0221)
Sleuth2 documentation built on May 29, 2024, 7:37 a.m.
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| ex0221 | R Documentation |
Bumpus's Data on Natural Selection (Weight)
Description
As evidence in support of natural selection, Bumpus presented measurements on house sparrows brought to the Anatomical Laboratory of Brown University after an uncommonly severe winter storm. Some of these birds had survived and some had perished. Bumpus asked whether those that perished did so because they lacked physical characteristics enabling them to withstand the intensity of that particular instance of selective elimination. The data are on the the weights, in grams, for the 24 adult male sparrows that perished and for the 35 adult males that survived.
Usage
ex0221Format
A data frame with 59 observations on the following 2 variables.
Weightweight of adult male sparrows (in grams)
Statusfactor variable indicating whether the sparrow perished or survived in a winter storm
Source
Ramsey, F.L. and Schafer, D.W. (2002). The Statistical Sleuth: A Course in Methods of Data Analysis (2nd ed), Duxbury.
See Also
case0201, ex2016
Examples
str(ex0221)
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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