Pima (Imbalanced) data set 1: Description. A imbalanced version of the Pima data set, where the classes has been renamed to positive and negative. 2: Type. Imbalanced 3: Origin. Real world 4: Instances. 768 5: Features. 8 6: Classes. 2 7: Missing values. No 8: IR: 1.90 9: Header. @relation pima @attribute Preg real [0.0, 17.0] @attribute Plas real [0.0, 199.0] @attribute Pres real [0.0, 122.0] @attribute Skin real [0.0, 99.0] @attribute Insu real [0.0, 846.0] @attribute Mass real [0.0, 67.1] @attribute Pedi real [0.078, 2.42] @attribute Age real [21.0, 81.0] @attribute Class {positive,negative} @inputs Preg, Plas, Pres, Skin, Insu, Mass, Pedi, Age @outputs Class