ex11.56 {Devore6} | R Documentation

## data from exercise 11.56

### Description

The `ex11.56` data frame has 30 rows and 3 columns.

### Format

This data frame contains the following columns:

Rating
  a numeric vector
pH
  a factor with levels `pH 3` `pH 5.5` `pH 7`
Health
  a factor with levels `Diseased` `Healthy`

### Source

Devore, J. L. (2003) Probability and Statistics for Engineering and the Sciences (6th ed), Duxbury

### Examples

    data(ex11.56)

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