| Bartlett {vcdExtra} | R Documentation |
In an experiment to investigate the effect of cutting length (two levels) and planting time (two levels) on the survival of plum root cuttings, 240 cuttings were planted for each of the 2 x 2 combinations of these factors, and their survival was later recorded.
Bartlett (1935) used these data to illustrate a method for testing for no three-way interaction in a contingency table.
data(Bartlett)
A 3-dimensional array resulting from cross-tabulating 3 variables for 960 observations. The variable names and their levels are:
| No | Name | Levels |
| 1 | Alive | "Alive", "Dead" |
| 2 | Time | "Now", "Spring" |
| 3 | Length | "Long", "Short" |
Hand, D. and Daly, F. and Lunn, A. D.and McConway, K. J. and Ostrowski, E. (1994). A Handbook of Small Data Sets. London: Chapman & Hall, p. 15, # 19.
Bartlett, M. S. (1935). Contingency Table Interactions Journal of the Royal Statistical Society, Supplement, 1935, 2, 248-252.
data(Bartlett) fourfold(Bartlett, mfrow=c(1,2)) mosaic(Bartlett, shade=TRUE) pairs(Bartlett, gp=shading_Friendly)