

   TThhee IIoowwaa WWhheeaatt YYiieelldd DDaattaa

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

        The data gives the pre-season and three growing months'
        precipitation, the mean temperatures for the three
        growing months and harvest month, the year, and the
        yield of wheat for the USA state of Iowa, for the years
        1930-1962.

   VVaalluuee::

        The data frame has the following components:

       Year: Year of measurements

      Rain0: Pre-season rainfall

      Temp1: Mean temperature for first growing month

      Rain1: Rainfall for first growing month

      Temp2: Mean temperature for second growing month

      Rain2: Rainfall for first growing month

      Temp3: Mean temperature for third growing month

      Rain3: Rainfall for first growing month

      Temp4: Mean temperature for harvest month

      Yield: Yield of wheat in Iowa for given year

   CCAATTEEGGOORRYY::

        Multiple regression; diagnostics.

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

        CAED Report, 1964.  Quoted in Draper  Smith.

