

   DDaarrwwiinn''ss PPllaanntt HHeeiigghhtt DDiiffffeerreenncceess

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

          y: The difference in heights for the pairs of plants
             (in units of 0.125 inches).

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

        The `darwin' data frame has 15 rows and 1 columns.

        Charles Darwin conducted an experiment to examine the
        superiority of cross-fertilized plants over self-fer-
        tilized plants.  15 pairs of plants were used. Each
        pair consisted of one cross-fertilized plant and one
        self-fertilized plant which germinated at the same time
        and grew in the same pot. The plants were measured at a
        fixed time after planting and the difference in heights
        between the cross- and self-fertilized plants are
        recorded in eighths of an inch.

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

        This data frame contains the following column:

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

        The data were obtained from

        Fisher, R.A. (1935) Design of Experiments. Oliver and
        Boyd.

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

        Darwin, C. (1876) The Effects of Cross- and Self-fer-
        tilisation in the Vegetable Kingdom.  John Murray.

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

