biertest.d4 {crossdes}

Experimental Design for the Beer Testing Data in Kunert (1998)

Description

The design is a balanced incomplete block design with rows as blocks. If one assumes that there is a preperiod, i.e. that each assessor is given the treatment of the fifth period before the experiment starts, then the design is carryover balanced.

Usage

data(biertest.d4)

Format

A matrix with 12 rows corresponding to the assessors, 5 columns corresponding to the five periods.

Details

The five treatments (products) to be tested are numbered 1,...,5.

Source

Kunert, J. (1998): Sensory experiments as crossover studies. Food Quality and Preference 9, 243-253 (design d4).

Examples

data(biertest.d4)