Casio FX-9750GII User Manual

Page 161

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6-21

1. From the Main Menu, enter the RUN • MAT mode.

2. Press the keys as follows.

*(STAT)(DIST)(NORM)

(NPd)

• 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

60

70

80

90

Frequency

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-7400G

II

:

(STAT)(S • Dev)

)(STAT)(Var)*)

(LIST)(List)@ (List)AU

* fx-7400G

II

:

(STAT)(Var)

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