Obtaining statistical values from input data – Casio FX-82AU PLUS User Manual
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To delete a line: In the Stat Editor, move the cursor to the line that you want
to delete and then press
&.
To insert a line: In the Stat Editor, move the cursor to the location where
you want to insert the line and then perform the following key operation:
(STAT)(Edit)(Ins).
To delete all Stat Editor contents: In the Stat Editor, perform the following
key operation:
(STAT)(Edit)(Del-A).
Obtaining Statistical Values from Input Data
To obtain statistical values, press
while in the Stat Editor and then
recall the statistical variable (
x
S
n
,
3
x
2
, etc.) you want. Supported statistical
variables and the keys you should press to recall them are shown below.
For single-variable statistical calculations, the variables marked with an
asterisk (*) are available.
Sum:
3
x
2
*,
3
x
*,
3
y
2
,
3
y
,
3
xy
,
3
x
3
,
3
x
2
y
,
3
x
4
(STAT) (Sum) to
Number of Items:
n
*, Mean:
M
*,
N
, Population Standard Deviation:
x
S
n
*,
y
S
n
, Sample Standard Deviation:
x
S
n
–1
*,
y
S
n
–1
(STAT) (Var) to
Minimum Value: minX*, minY, Maximum Value: maxX*, maxY
(STAT) (MinMax) to
(When the single-variable statistical calculation is selected)
(STAT) (MinMax) to
(When a paired-variable statistical calculation is selected)
Regression Coefficients: A, B, Correlation Coefficient:
r
, Estimated
Values:
K
,
L
(STAT) (Reg) to
Regression Coefficients for Quadratic Regression: A, B, C, Estimated
Values:
K
1
,
K
2
,
L
(STAT) (Reg) to
• See the table at the beginning of this section of the manual for the regression
formulas.
•
K
,
K
1
,
K
2
and
L
are not variables. They are commands of the type that take
an argument immediately before them. See “Calculating Estimated Values”
for more information.
To input the single-variable data
x
= {1, 2, 2, 3, 3, 3, 4, 4, 5}, using
the FREQ column to specify the number of repeats for each items
({
x
n
; freq
n
} = {1;1, 2;2, 3;3, 4;2, 5;1}), and calculate the mean and
population standard deviation.
(SETUP)A(STAT)(ON)
(STAT)(1-VAR)
1
2 3 4 5 AC
1
2 3 2
(STAT)(Var)(M)
(STAT)(Var)(
x
S
n
)
Results: Mean: 3 Population Standard Deviation: 1.154700538
2
2
STAT
STAT