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