6-21
1. From the Main Menu, enter the
RUN • MAT
mode.
2. Press the keys as follows.
*
(STAT)
(DIST)
(NORM)
(NPd)
( { )
@AB
( } )
@DA
U
• 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)
A
U
* fx-7400G
II
:
(STAT)
(S • Dev)
)
(STAT)
(Var)*
)
(LIST)
(List)
@
(List)
A
U
* fx-7400G
II
:
(STAT)
(Var)
Summary of Contents for FX-7400GII
Page 337: ...E CON2 Application ...
