This is Dataplot data file RATFEED.DAT Weight Gain of Rats Source--Hoaglin, D., Mosteller, F., and Tukey, J. (1991). Fundamentals of Exploratory Analysis of Variance. Wiley, New York, page 100. Response Variable = Weight gain of rats Number of observations = 60 (= 10 reps x 2 amounts x 3 diets) Number of variables per line image = 3 Order of variables per line image-- Response variable = rat weight gain (in grams) Factor 1 = diet amount (1 = high, 2 = low) Factor 2 = diet type (1 = beef, 2 = pork, 3 = cereal) Statistical areas--Multifactor Design type --Randomized Block To read this file into Dataplot-- SKIP 25 READ RATFEED.DAT Y X1 X2 Source: http://www.itl.nist.gov/div898/education/anova/ratfeed.dat Weight Diet Diet Gain Amount Type Y X1 X2 -------------------------- 118 1 1 117 1 1 111 1 1 107 1 1 104 1 1 102 1 1 100 1 1 87 1 1 81 1 1 73 1 1 120 1 2 108 1 2 105 1 2 102 1 2 102 1 2 98 1 2 96 1 2 94 1 2 91 1 2 79 1 2 111 1 3 98 1 3 95 1 3 92 1 3 88 1 3 86 1 3 82 1 3 77 1 3 74 1 3 56 1 3 95 2 1 90 2 1 90 2 1 90 2 1 86 2 1 78 2 1 76 2 1 72 2 1 64 2 1 51 2 1 106 2 2 97 2 2 86 2 2 82 2 2 82 2 2 81 2 2 73 2 2 70 2 2 61 2 2 49 2 2 107 2 3 98 2 3 97 2 3 95 2 3 89 2 3 80 2 3 74 2 3 74 2 3 67 2 3 58 2 3