copula: uranium – R documentation

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uranium

Uranium Exploration Dataset of Cook & Johnson (1986)

Description

These data consist of log concentrations of 7 chemical elements in 655 water samples collected near Grand Junction, CO (from the Montrose quad-rangle of Western Colorado). Concentrations were measured for the following elements: Uranium (U), Lithium (Li), Cobalt (Co), Potassium (K), Cesium (Cs), Scandium (Sc), And Titanium (Ti).

Usage

data(uranium, package="copula")

Format

A data frame with 655 observations of the following 7 variables:

U: (numeric) log concentration of Uranium.
Li: (numeric) log concentration of Lithium.
Co: (numeric) log concentration of Colbalt.
K: (numeric) log concentration of Potassium.
Cs: (numeric) log concentration of Cesium.
Sc: (numeric) log concentration of Scandum.
Ti: (numeric) log concentration of Titanium.

References

Cook, R. D. and Johnson, M. E. (1986) Generalized BurrParetologistic distributions with applications to a uranium exploration data set. Technometrics 28, 123–131.

Examples

data(uranium)

copula

Multivariate Dependence with Copulas

v1.0-1

GPL (>= 3) | file LICENCE

Authors

Marius Hofert [aut] (<https://orcid.org/0000-0001-8009-4665>), Ivan Kojadinovic [aut] (<https://orcid.org/0000-0002-2903-1543>), Martin Maechler [aut, cre] (<https://orcid.org/0000-0002-8685-9910>), Jun Yan [aut] (<https://orcid.org/0000-0003-4401-7296>), Johanna G. Nešlehová [ctb] (evTestK(), <https://orcid.org/0000-0001-9634-4796>), Rebecca Morger [ctb] (fitCopula.ml(): code for free mixCopula weight parameters)

Initial release

2020-12-07