Concrete {BSDA} | R Documentation |

## Compressive strength of concrete blocks made by two different methods

### Description

Data for Example 7.17

### Usage

```
Concrete
```

### Format

A data frame/tibble with 20 observations on two variables

- strength
comprehensive strength (in pounds per square inch)

- method
factor with levels

`new`

and`old`

indicating the method used to construct a concrete block

### References

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

### Examples

```
wilcox.test(strength ~ method, data = Concrete, alternative = "greater")
```

[Package

*BSDA*version 1.2.2 Index]