This is Dataplot data file YOUDEN94.DAT Astronomical Units (= average distance from earth to sun) Source--Scientific American, April 1961, page 94. Number of observations = 15 Number of variables per line image = 4 Order of variables on a line image-- 1. Response variable 1 = astronomical unit (in millions of miles) 2. Response variable 2 = experimenter's lower bound on true value 3. Response variable 3 = experimenter's upper bound on true value 4. Factor 1 = year To read this file into Dataplot-- SKIP 25 READ YOUDEN94.DAT Y YLOWER YUPPER X Y YLOWER YUPPER X Distance Lower Bound Upper Bound Year Experimenter -------------------------------------------------------------------------- 93.28 93.20 93.35 1895 Newcomb 92.83 92.79 92.87 1901 Hinks 92.91 92.90 92.92 1921 Noteboom 92.87 92.82 92.91 1928 Spencer Jones 93.00 92.99 93.01 1931 Spencer Jones 92.91 92.90 92.92 1933 Witt 92.84 92.77 92.92 1941 Adams 92.977 92.945 93.008 1950 Brower 92.9148 92.9107 92.9190 1950 Rabe 92.874 92.873 92.875 1958 Millstone Hill 92.876 92.871 92.882 1959 Jodrell Bank 92.9251 92.9166 92.9335 1960 S.T.L. 92.960 92.958 92.962 1961 Jodrell Bank 92.956 92.955 92.957 1961 Cal. Tech. 92.813 92.810 92.816 1961 Soviets