ex11.15 {Devore7} | R Documentation

## R Data set: ex11.15

### Description

The `ex11.15` data frame has 18 rows and 4 columns.

### Usage

    data(ex11.15)

### Format

A data frame with 18 observations on the following 4 variables.

`Sand`
  a factor with levels `0` `15` `30`
`Carbon`
  a factor with levels `0` `0.25` `0.5`
`Hardness`
  a numeric vector
`Strength`
  a numeric vector

### Details

Consult the web site http://www.thomsonedu.com/statistics/devore for additional online resources that are available for this book.

### Source

Devore, J. L. (2008) Probability and Statistics for Engineering and the Sciences (7th Edition), ISBN-10: 0495382175 ISBN-13: 9780495382171

### Examples

    data(ex11.15)
    str(ex11.15)

[Package Devore7 version 0.7.1 Index]