Hardwood {BSDA} | R Documentation |

## Tensile strength of Kraft paper for different percentages of hardwood in the batches of pulp

### Description

Data for Example 2.18 and Exercise 9.34

### Usage

```
Hardwood
```

### Format

A data frame/tibble with 19 observations on two variables

- tensile
tensile strength of kraft paper (in pounds per square inch)

- hardwood
percent of hardwood in the batch of pulp that was used to produce the paper

### Source

G. Joglekar, et al., "Lack-of-Fit Testing When Replicates Are Not Available,"
*The American Statistician*, 43(3), (1989), 135-143.

### References

Kitchens, L. J. (2003) *Basic Statistics and Data Analysis*.
Pacific Grove, CA: Brooks/Cole, a division of Thomson Learning.

### Examples

```
plot(tensile ~ hardwood, data = Hardwood)
model <- lm(tensile ~ hardwood, data = Hardwood)
abline(model, col = "red")
plot(model, which = 1)
```

[Package

*BSDA*version 1.2.2 Index]