

   WWeeiigghhtt DDaattaa ffoorr DDoommeessttiicc CCaattss

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

        Sex: A factor for the sex of the cat (levels are `F'
             and `M').

        Bwt: Body weight in kg.

        Hwt: Heart weight in kg.

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

        The `cats' data frame has 144 rows and 3 columns.

        The `catsM' data frame has 97 rows and 3 columns.

        144 adult (over 2kg in weight) cats used for experi-
        ments with the drug digitalis had their heart and body
        weight recorded.  47 of the cats were female and 97
        were male.  The `catsM' data frame consists of the data
        for the male cats.

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

        This data frames contain the following columns:

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

        The data were obtained from

        Fisher, R.A. (1947) The analysis of covariance method
        for the relation between a part and the whole. Biomet-
        rics, 3, 65-68.

   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.

        Venables, W.N. and Ripley, B.D. (1994) Modern Applied
        Statistics with S-Plus. Springer-Verlag.

