The Receiver Operating Characteristic (ROC) curve is a graph which illustrates just how well a set of predictor variables, measured on various cases, predict the group to which that case belongs.
LOGISTIC REGRESSION VAR=group /METHOD=ENTER score f1 /SAVE PRED (pred) /CRITERIA PIN(.05) POUT(.10) ITERATE(20) CUT(.5) . ROC pred by group(1) /MISSING = EXCLUDE /PLOT = CURVE /PRINT = SE COORDINATES.