Description

An experiment at the Marine/Freshwater Biomedical Sciences Center at Oregon State University investigated the carcinogenic effects of aflatoxicol, a metabolite of Aflatoxin B1, which is a toxic by-product produced by a mold that infects cottonseed meal, peanuts and grains. Twenty tanks of rainbow trout embryos were exposed to one of five doses of Aflatoxicol for one hour. The data represent the numbers of fish in each tank and the numbers of these that had liver tumours after one year.

Usage

Format

A data frame with 20 observations on the following 3 variables.

Dose

Dose (in ppm)

Tumor

Number of trout with liver tumours

Total

Number of trout in tank

Source

Ramsey, F.L. and Schafer, D.W. (2002). The Statistical Sleuth: A Course in Methods of Data Analysis (2nd ed), Duxbury.

Examples