TasteTest: Taste test data
In rpruim/fastR2: Foundations and Applications of Statistics Using R (2nd Edition)

TasteTest

R Documentation

Taste test data

Description

The 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)
gf_jitter(score ~ scr, data = TasteTest, color = ~liq, width = 0.2, height =0) %>%
  gf_line(stat = "summary", group = ~liq)
df_stats(score ~ scr | liq, data = TasteTest)

rpruim/fastR2 documentation built on Nov. 11, 2023, 7:32 a.m.