Yield of onions at various densities

Description

The mean yields per plant for three onion varieties

Usage

data(yieldden)

Format

A data frame with 30 observations on the following 3 variables.

Yield

the yield per plant in grams; a numeric vector

Dens

the planting density in plants per square foot; a numeric vector

Var

the variety; a numeric vector with levels 1, 2 or 3

Source

R. Mead (1970) Plant density and crop yield. Applied Statistics, 19(1), 64–81.

Examples

data(yieldden)
summary(yieldden)