

   SSuuggaarr--ccaannee DDiisseeaassee DDaattaa

   AArrgguummeennttss::

          n: The total number of shoots in each plot.

          r: The number of diseased shoots.

          x: The number of pieces of the stems, out of 50,
             planted in each plot.

        var: A factor indicating the variety of sugar-cane in
             each plot.

      block: A factor for the blocks.

   SSUUMMMMAARRYY::

        The `cane' data frame has 180 rows and 5 columns.

        The data frame represents a randomized block design
        with 45 varieties of sugar-cane and 4 blocks.  The aim
        of the experiment was to classify the varieties into
        resistant, intermediate and susceptible to a disease
        called "coal of sugar-cane" (carvao da cana-de-acucar).
        This is a disease that is common in sugar-cane planta-
        tions in certain areas of Brazil.

        For each plot, fifty pieces of sugar-cane stem were put
        in a solution containing the disease agent and then
        some were planted in the plot.  After a fixed period of
        time, the total number of shoots and the number of dis-
        eased shoots were recorded.

   DDAATTAA DDEESSCCRRIIPPTTIIOONN::

        This data frame contains the following columns:

   SSOOUURRCCEE::

        The data were kindly supplied by Dr. C.G.B. Demetrio of
        Escola Superior de Agricultura, Universidade de Sao
        Paolo, Brazil.

   OOTTHHEERR RREEFFEERREENNCCEESS::

        Davison, A.C. and Hinkley, D.V. (1997) Bootstrap Meth-
        ods and Their Application. Cambridge University Press.

