Casio Scientific Calculator, 244 Function Calculator, 2-line Display, Fraction calculations, Combination and permutation, Statistics (STAT-data editor, Standard deviation, Regression analysis), 9 variables, S-V.P.A.M. (Super Visually Perfect Algebraic Method) All the features of the existing V.P.A.M. series plus a new 2-line display and a useful Replay function. All this helps to make mathematics easier to use and easier to understand than ever before, STAT-data editor Back-step viewing and editing of input data, Quick and easy recall of previously executed formulas for editing and re-execution.