Casio fx-3650P II - Paired-variable Statistical Calculations: Data Management; Data Input Without Frequency; Managing Paired Sample Data; Statistical Calculation Commands Reference

E-33
Frequency Off (FreqOff)
In this case, input each individual data item as shown below.
{
x
1
}
,
{
y
1
}
m
(DT)
{
x
2
}
,
{
y
2
}
m
(DT)
{
xn
}
,
{
yn
}
m
(DT)
A
Viewing Current Sample Data
After inputting sample data, you can press
c
to scroll through the data in the sequence
you input it. The
$
symbol indicates there is data below the sample that is currently on the
display. The
`
symbol indicates there is data above.
When the statistical frequency setting is FreqOn, data is displayed in the sequence:
x
1
,
y
1
,
Freq1,
x
2
,
y
2
, Freq2, and so on. In the case of FreqOff, it is displayed in the sequence:
x
1
,
y
1
,
x
2
,
y
2
,
x
3
,
y
3
, and so on. You can also use
f
to scroll in the reverse direction.
A
Editing a Data Sample
To edit a data sample, recall it, input the new value(s), and then press
E
.
A
Deleting a Data Sample
To delete a data sample, recall it and then press
1m
(CL).
A
Deleting All Sample Data
See “Deleting All Sample Data” (page 31).
A
Statistical Calculations Using Input Sample Data
To perform a statistical calculation, input the applicable command and then press
E
.
A
REG Mode Statistical Command Reference
Sum and Number of Sample Command (S-SUM Menu)

x
2
1
1
(S-SUM)
1
Obtains the sum of squares of the sample
x
-data.
Σ
x
2
=
Σ
x
i
2

x
1
1
(S-SUM)
2
Obtains the sum of the sample
x
-data.
Σ
x
=
Σ
x
i
n
1
1
(S-SUM)
3
Obtains the number of samples.

y
2
1
1
(S-SUM)
e
1
Obtains the sum of squares of the sample
y
-data.
Σ
y
2
=
Σ
y
i
2

y
1
1
(S-SUM)
e
2
Obtains the sum of the sample
y
-data.
Σ
y
=
Σ
y
i

xy
1
1
(S-SUM)
e
3
Obtains the sum of products of the sample
x
-data and
y
-data.
Σ
xy
=
Σ
x
i
y
i