

   HHeeaatt EEvvoollvveedd bbyy SSeettttiinngg CCeemmeennttss

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

   x1 x2 x3 x4: Proportions (%) of active ingredients

          y: heat evolved in cals/gm

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

        Experiment on the heat evolved in the setting of each
        of 13 cements.

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

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

        Hald, A. (1957) Statistical Theory with Engineering
        Applications.  Wiley, New York.

   EExxaammpplleess::

        lm(y ~ x1 + x2 + x3 + x4, cement)

