ex1220: Galapagos Islands
In Sleuth2: Data Sets from Ramsey and Schafer's "Statistical Sleuth (2nd Ed)"
ex1220 R Documentation
Galapagos Islands
Description
The number of species on an island is known to be related to the
island's area. Of interest is what other variables are also related
to the number of species, after island area is accounted for, and
whether the answer differs for native and non native species.
Usage
ex1220
Format
A data frame with 30 observations on the following 8 variables.
Islanda character vector indicating the island
Totaltotal number of observed species
Nativenumber of native species
Areaarea (km^2)
Elevelevation (m)
DistNeardistance from nearest island (km)
DistSCdistance from Santa Cruz (km)
AreaNeararea of nearest island (km^2)
Source
Ramsey, F.L. and Schafer, D.W. (2002). The Statistical Sleuth: A
Course in Methods of Data Analysis (2nd ed), Duxbury.
References
Johnson, M.P. and Raven, P.H. (1973). Species Number and Endemism: The
Galapagos Archipelago Revisited, Science 179(4076):
893–895.
Examples
str(ex1220)
Sleuth2 documentation built on May 29, 2024, 7:37 a.m.
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| ex1220 | R Documentation |
Galapagos Islands
Description
The number of species on an island is known to be related to the island's area. Of interest is what other variables are also related to the number of species, after island area is accounted for, and whether the answer differs for native and non native species.
Usage
ex1220Format
A data frame with 30 observations on the following 8 variables.
Islanda character vector indicating the island
Totaltotal number of observed species
Nativenumber of native species
Areaarea (km
^2)Elevelevation (m)
DistNeardistance from nearest island (km)
DistSCdistance from Santa Cruz (km)
AreaNeararea of nearest island (km
^2)
Source
Ramsey, F.L. and Schafer, D.W. (2002). The Statistical Sleuth: A Course in Methods of Data Analysis (2nd ed), Duxbury.
References
Johnson, M.P. and Raven, P.H. (1973). Species Number and Endemism: The Galapagos Archipelago Revisited, Science 179(4076): 893–895.
Examples
str(ex1220)
R Package Documentation
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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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