tastetest: Taste test data

In fastR: Data sets and utilities for Foundations and Applications of Statistics by R Pruim

Description

Tthe results from a study comparing different preparation methods for taste test samples.

Usage

data(tastetest)

data(taste1)

Format

A data frame with 16 observations on 2 (taste1) or 4 (tastetest) variables.

score

taste score from a group of 50 testers

scr

a factor with levels coarse fine

liq

a factor with levels hi lo

type

a factor with levels A B C D

Details

The samples were prepared for tasting using either a coarse screen or a fine screen, and with either a high or low liquid content. A total taste score is recorded for each of 16 groups of 50 testers each. Each group had 25 men and 25 women, each of whom scored the samples on a scale from -3 (terrible) to 3 (excellent). The sum of these individual scores is the overall taste score for the group.

Source

E. Street and M. G. Carroll, Preliminary evaluation of a food product, Statistics: A Guide to the Unknown (Judith M. Tanur et al., eds.), Holden-Day, 1972, pp. 220-238.

Examples

data(tastetest)
data(taste1)
require(Hmisc)
xyplot(score~scr,tastetest)
xyplot(score~scr,groups=liq,tastetest,type='a')
summary(score~scr,tastetest)

fastR documentation built on May 2, 2019, 5:53 p.m.