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 7.3-50 Index]