

   EExxhhaauusstt eemmiissssiioonnss

        data(ethanol)

   FFoorrmmaatt::

        Data frame with NOx, E and C variables.

   DDeessccrriippttiioonn::

        NOx exhaust emissions from a single cylinder engine.
        Two predictor variables are E (the engine's equivalence
        ratio) and C (Compression ratio).

   SSoouurrccee::

        Brinkman (1981). Also studied extensively by Cleveland
        (1993).

   RReeffeerreenncceess::

        Brinkman, N. D. (1981). Ethanol fuel - a single-cylin-
        der engine study of efficiency and exhaust emissions.
        SAE transactions 90, 1414-1424.

        Cleveland, W. S. (1993). Visualizing data. Hobart
        Press, Summit, NJ.

