Datasets for Statistical Analysis

Keywords:

regression, drugs, influential points

Categories:

regression;
biology

Description:

The data describe an experiment conducted to investigate the amount of drug present in the liver of a rat. Nineteen rats were randomly selected, weighed, and placed under a light anesthetic and given an oral dose of the drug. Because the it was thought that large livers would absorb more of a given dose than a small liver, the actual dose given was approximately determined as 40mg of the drug per kilogram of body weight. After a fixed length of time, each rat was sacrificed and the liver weighed, and the percent dose in the liver was determined.

There are nineteen observations on three covariates and one response.

Variables:

BodyWt	The body weight of each rat in grams
LiverWt	The weight of each liver in grams
Dose	The relative dose of the drug given to each rat as a fraction of the largest dose
DrugInLiver	The proportion of the dose in the liver.

Data Quality:

There are no missing values.

Source:

Weisberg, Sandford (1985). Applied Linear Regression second edition, New York: John Wiley and Sons, page 122.

Notes:

Weisberg uses the data to demonstrate an influential point in the multiple regression analysis.

References: