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]