rtrout {GLMsData}

Weights of rainbow trout

Description

Weights of rainbow trout at various doses of dca

Usage

data(rtrout)

Format

A data frame containing 96 observations with the following 2 variables.

Weight

the weight of the rainbow trout, in grams; a numeric vector

Dose

the dose of 3, 4-dichloroaniline (dca), in micrograms per litre; one of 0 (control), 19, 39, 39, 71, 120, or 210

Details

The data give the weight of 95 rainbow trout after exposure to dca for 28 days (note that one observation is missing at a dose of 39). The aim of the study was to “determine the concentration level which causes 25% inhibition [i.e. weight loss] from the control” (Maul, p. 161).

Source

Crossland, N.O. (1985) A method to evaluate effects of toxic chemicals on fish growth. Chemosphere, 14(11-12), 1855–1870.

References

Maul A. (1992) Application of generalized linear models to the analysis of toxicity test data. Environmental Monitoring and Assessment, 23(1), 153–163.

Examples

   data(rtrout)
   summary(rtrout)