1. A method for accuracy display for a data mining model, where said model predicts, for each case in a testing data set, a specific state from among a state set of at least two possible states and where said model determines an associated probability for each of said predictions, and where the correctness of said prediction is verifiable, comprising: producing a visual representation of a multi-state prediction evaluation on a graph of at least two dimensions comprising at least two data points where for each of said data points: (1) a data point set of said cases from among said testing data set has been selected such that no case in said data point set has a lower associated probability for the prediction made by said model than any case not in said data point set, (2) a first coordinate of said data points corresponds to the number of cases in said data point set, and (3) a second coordinate of said data points corresponds to the number of correct predictions for cases contained in said data point set.