apple {mvnmle}

Worm Infestations in Apple Crops

Description

The apple data frame provides the number of apples (in 100s) on 18 different apple trees. For 12 trees, the percentage of apples with worms (x 100) is also given.

Usage

apple

Format

This data frame contains the following columns:

size

hundreds of apples on the tree.

worms

percentage (x100) of apples harboring worms.

Source

Little, R. J. A., and Rubin, D. B. (1987) Statistical Analysis with Missing Data. New York: Wiley, ISBN:0471802549.

Cochran, W. G., and Snedecor, G. W. (1972) Statistical Methods, 6th ed. Ames: Iowa State University Press, ISBN:0813815606.

Examples

library(mvnmle)
data(apple)

mlest(apple)