The subjective assessment, on a 0 to 20 integer scale, of 54 classical painters. The painters were assessed on four characteristics: composition, drawing, colour and expression. The data is due to the Eighteenth century art critic, de Piles.
paintersThe row names of the data frame are the painters. The components are:
CompositionComposition score.
DrawingDrawing score.
ColourColour score.
ExpressionExpression score.
SchoolThe school to which a painter belongs, as indicated by a factor level
      code as follows:
      "A": Renaissance;
      "B": Mannerist;
      "C": Seicento;
      "D": Venetian;
      "E": Lombard;
      "F": Sixteenth Century;
      "G": Seventeenth Century;
      "H": French.
Venables, W. N. and Ripley, B. D. (2002) Modern Applied Statistics with S. Fourth edition. Springer.