The original painters data contain the subjective assessment, on a 0 to 20 integer scale, of 54 classical painters. The newpainters data discretizes the subjective assessment by quartiles with thresholds 25%, 50%, 75%. The painters were assessed on four characteristics: composition, drawing, colour and expression. The data is due to the Eighteenth century art critic, de Piles.
data(newpainters)
A table containing 5 variables ("Composition", "Drawing", "Colour", "Expression", and "School") and 54 observations.
Venables, W. N. and Ripley, B. D. (2002) ``Modern Applied Statistics with S,'' Fourth edition. Springer.