Source: Carmeron and Pauling(1978) Taken From: Rawlings (1988), Applied Regression Analysis, Wadsworth, p. 83. Dimension: 22 observations on 4 variables. Description: A study of the effects of supplemental ascorbate, vitamin C on the treatment of colon cancer Column Description 1 Sex(female=1, male=-1) 2 Age 3 Days(Number of days survival after date of untreatability) 4 Control(Average number of days survival of ten control patients for each case)