Casio FX-9750GIIWE-L-IH User Guide - Page 161
Determining Standard Deviation and Variance from List Data, Syntax, Example, To store
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1. From the Main Menu, enter the RUN • MAT mode. 2. Press the keys as follows. *(STAT)(DIST)(NORM) (NPd) ( { )@AB ( } )@ DAU • For details about what you can do with the distribution function and its syntax, see "Performing Distribution Calculations in a Program" (page 8-29). I Determining Standard Deviation and Variance from List Data You can use functions to determine standard deviation and variance for specified list data. This calculation is performed in the RUN • MAT (or RUN) mode. You can perform calculations using data you saved to a list (List 1 to List 26) with the STAT mode List Editor or list data you input directly on the RUN • MAT (or RUN) mode screen. Syntax StdDev(List n [,List m]) Variance(List n [,List m]) List n........Sample data List m.......Frequency data Example To store the x-data below in List 1, the frequency values in List 2, and determine the standard deviation and variance x Frequency 60 70 80 90 3 5 4 1 1. From the Main Menu, enter the STAT mode. 2. Use the List Editor to store the above data. 3. From the Main Menu, enter the RUN • MAT (or RUN) mode. 4. Press the keys as follows. *(STAT)(S • Dev)*) (LIST)(List)@(List)AU * fx-7400GII: (STAT)(S • Dev) )(STAT)(Var)*) (LIST)(List)@(List)AU * fx-7400GII: (STAT)(Var) 6-21