This is Dataplot data file CREAM.DAT Acidity of Sour Cream Source--Hoaglin, D., Mosteller, F., and Tukey, J. (1991). Fundamentals of Exploratory Analysis of Variance. Wiley, New York, page 139. Response Variable = Acidity Number of observations = 25 (= 5 batches x 4 positions) Number of variables per line image = 4 Order of variables per line image-- Response variable = acidity Factor 1 = batch (5 levels) Factor 2 = position (5 levels) Factor 3 = starter (5 levels) 1 = C 2 = H 3 = M 4 = N 5 = Y Statistical areas--multifactor Design Type --5-level Latin Square To read this file into Dataplot-- SKIP 25 READ CREAM.DAT Y X1 X2 X3 Acidity Batch Position Starter Y X1 X2 X3 --------------------------------- 8.04 1 1 3 6.61 1 2 2 11.99 1 3 4 7.78 1 4 5 8.40 1 5 1 9.58 2 1 4 6.58 2 2 5 6.66 2 3 1 5.34 2 4 3 7.92 2 5 2 7.98 3 1 5 7.98 3 2 3 8.98 3 3 2 7.94 3 4 1 11.32 3 5 4 9.74 4 1 2 9.46 4 2 1 9.14 4 3 3 12.00 4 4 4 9.32 4 5 5 9.66 5 1 1 11.28 5 2 4 8.04 5 3 5 8.12 5 4 2 6.72 5 5 3