R: Numbers of Rotifers by Fluid Density

rotifer {MASS} | R Documentation

## Numbers of Rotifers by Fluid Density

### Description

The data give the numbers of rotifers falling out of suspension for different fluid densities. There are two species, `pm` Polyartha major and `kc`, Keratella cochlearis and for each species the number falling out and the total number are given.

### Usage

    rotifer

### Format

`density`
  specific density of fluid.
`pm.y`
  number falling out for P. major.
`pm.total`
  total number of P. major.
`kc.y`
  number falling out for K. cochlearis.
`kc.tot`
  total number of K. cochlearis.

### Source

D. Collett (1991) Modelling Binary Data. Chapman & Hall. p. 217

[Package MASS version 7.2-45 Index]