tastetest: Taste test data

In fastR: Foundations and Applications of Statistics Using R

Description

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

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, data=tastetest)
xyplot(score~scr, groups=liq, tastetest, type='a')
favstats(score~scr, data=tastetest)

fastR documentation built on May 1, 2019, 11:18 p.m.