Casio fx 991MS User Guide - Page 30

Press 2 to exit data input without registering the value you just input. Press 1 if you want to register the value you just input, without saving it in memory. If you do this, however, you will not be able to display or edit any of the data you have input. • To delete data you have just input, press A U. • After inputting statistical data in the SD Mode or REG Mode, you will be unable to display or edit individual data items any longer after perform either the following operations. Changing to another mode Changing the regression type (Lin, Log, Exp, Pwr, Inv, Quad) Regression Calculations REG Use the F key to enter the REG Mode when you want to perform statistical calculations using regression. REG F 3 (fx-95MS) F F 2 (Other Models) • Entering the REG Mode displays screens like the ones shown below. L i n Log Ex p 1 23 re Pw r I nv Quad 1 23 • Press the number key (1, 2, or 3) that corresponds to the type of regression you want to use. 1 (Lin) : Linear regression 2 (Log) : Logarithmic regression 3 (Exp) : Exponential regression r 1 (Pwr) : Power regression r 2 (Inv) : Inverse regression r 3 (Quad) : Quadratic regression 28