| ArcticLake {compositions} | R Documentation |
Artic lake sediment samples of different water depth
Description
Sand, silt and clay compositions of 39 sediment samples of different water depth in an Arctic lake.
Usage
data(ArcticLake)
Details
Sand, silt and clay compositions of 39 sediment samples at different water depth (in meters) in an Arctic lake. The additional feature is a concomitant variable or covariate, water depth, which may account for some of the variation in the compositions. In statistical terminology we have a multivariate regression problem with sediment composition as regressand and water depth as regressor.
All row percentage sums to 100, except for rounding errors.
Note
Courtesy of J. Aitchison
Source
Aitchison: CODA microcomputer statistical package, 1986, the file name ARCTIC.DAT, here included under the GNU Public Library Licence Version 2 or newer.
References
Aitchison: The Statistical Analysis of Compositional Data, 1986, Data 5, pp5.