A time-tested performer, the HP 12c Platinum 25th Anniversary Edition Financial Calculator, has an easy to use layout, one-line LCD display and Algebra or RPN data entry. Cumulative statistical analysis Std. deviation, mean, weighted mean Linear regression Forecasting, correlation coefficient Total, Σx, Σx2, Σy, Σy2, Σxy +, -, x, %, ÷, 1/x, ±, LN, ex, n!  The industry standard in financial calculators is now faster and has more power than ever.