rat: Rat data

In alr4: Data to Accompany Applied Linear Regression 4th Edition

Description

Data collected in an experiment in which rats were injected with a dose of a drug approximately proportional to body weight. At the end of the experiment, the animal's liver was weighed, and the fraction of the drug recoved in the liver was recorded. The experimenter expected the response to be independent of the predictors.

Format

This data frame contains the following columns:

BodyWt

BodyWt of the rat

LiverWt

LiverWt measured after sacrifice

Dose

Dose, roughly proportional to body weight

y

dose of drug recovered after sacrifice of the animal

Source

Dennis Cook

References

Weisberg, S. (2014). Applied Linear Regression, 4th edition. Hoboken NJ: Wiley.

Examples

head(rat)

Example output

Loading required package: car
Loading required package: carData
Loading required package: effects
Registered S3 methods overwritten by 'lme4':
  method                          from
  cooks.distance.influence.merMod car 
  influence.merMod                car 
  dfbeta.influence.merMod         car 
  dfbetas.influence.merMod        car 
lattice theme set by effectsTheme()
See ?effectsTheme for details.
  BodyWt LiverWt Dose    y
1    176     6.5 0.88 0.42
2    176     9.5 0.88 0.25
3    190     9.0 1.00 0.56
4    176     8.9 0.88 0.23
5    200     7.2 1.00 0.23
6    167     8.9 0.83 0.32

alr4 documentation built on May 2, 2019, 2:13 p.m.