cereal {CMHNPA}

Cereal data

Description

Each of five breakfast cereals are ranked by ten judges, who each taste three cereals. Each cereal is assessed six times.

Usage

data(cereal)

Format

A data frame with 30 rows and three columns.

rank

the rank of the cereal within each judge block

judge

the judge that was used

type

the type of cereal

Details

The data comes from a Balanced Incomplete Block Design with the number of treatments t = 5, number of blocks b = 10, with k = 3 and r = 6.

Source

Kutner et al. (2005, section 28.1)

References

Kutner, M., Nachtsheim, C., Neter, J. and Li, W. (2005). Applied linear statistical models (5th ed.). Boston: McGraw-Hill Irwin.

Examples

attach(cereal)
durbin(y = rank, groups = type, blocks = judge)