This is Dataplot data file SMOKERS.DAT Cigarette Smokers Source--Hoaglin, D., Mosteller, F., and Tukey, J. (1991). Fundamentals of Exploratory Analysis of Variance. Wiley, New York, page xx. Response Variable = % of population that smokes Number of observations = 15 (= 5 incomes x 3 ages) Number of variables per line image = 3 Order of variables per line image-- Response variable = percentage of population that smokes Factor 1 = family income (5 levels) Factor 2 = age (3 levels) Statistical areas--Multifactor Design type --Randomized Block To read this file into Dataplot-- SKIP 25 READ SMOKERS.DAT Y X1 X2 % Smokers Income Age Y X1 X2 -------------------------- 38 1 1 42 1 2 14 1 3 41 2 1 41 2 2 16 2 3 36 3 1 39 3 2 18 3 3 32 4 1 36 4 2 15 4 3 28 5 1 33 5 2 17 5 3