R: Hormone Data from page 107

hormone {bootstrap} | R Documentation

## Hormone Data from page 107

### Description

The hormone data. Amount in milligrams of anti-inflammatory hormone remaining in 27 devices, after a certain number of hours (hrs) of wear.

### Usage

    data(hormone)

### Format

A data frame with 27 observations on the following 3 variables.

Lot

  a character vector

hrs

  a numeric vector

amount

  a numeric vector

### Details

The hormone data. Amount in milligrams of anti-inflammatory hormone remaining in 27 devices, after a certain number of hours (hrs) of wear. The devices were sampled from 3 different manufacturing lots, called A, B and C. Lot C looks like it had greater amounts of remaining hormone, but it also was worn the least number of hours.

The book uses this as an example for regression analysis.

### Source

Efron, B. and Tibshirani, R. (1993) An Introduction to the Bootstrap. Chapman and Hall, New York, London.

### Examples

    str(hormone)
    if(interactive())par(ask=TRUE)
    with(hormone, stripchart(amount ~ Lot))
    with(hormone, plot(amount ~ hrs, pch=Lot))
    abline( lm(amount ~ hrs, data=hormone, col="red2"))

[Package bootstrap version 2019.6 Index]