Casio fx-3650P II User Manual page 32

Note
• The following shows images of how the data appears before and after the delete
operation.
Before
x
: 24.5
1
x
: 25.5
2
x
: 26.5
3
• When the statistical frequency setting is turned on (FreqOn), the applicable
Freq data pair is deleted.
A Deleting All Sample Data
Perform the following key operation to delete all sample data.
19 (CLR) 1 (Stat) E
If you do not want to delete all sample data, press A in place of E in the above operation.
A Statistical Calculations Using Input Sample Data
To perform a statistical calculation, input the applicable command and then press E .
A SD Mode Statistical Command Reference
2
x
Obtains the sum of squares of the sample
data.
Σ x
n
Obtains the number of samples.
σ
x
Obtains the population standard deviation.
σ
=
x
12 (S-VAR) e1
minX
Determines the minimum value of the
samples.
Freq1: 4
Freq2: 6
Freq3: 2
11 (S-SUM) 1
Σ x
2
2
=
i
11 (S-SUM) 3
12 (S-VAR) 2
Σ (x
– o)
2
i
n
1m (CL)
x
x
Shifted upwards.
x
Obtains the sum of the sample data.
¯ x
Obtains the mean.
s
x
Obtains the sample standard deviation.
s
maxX
Determines the maximum value of the
samples.
E-31
L i ne =
After
: 24.5 Freq1: 4
1
: 26.5 Freq2: 2
2
x
-data and
11 (S-SUM) 2
Σ x Σ x
=
i
12 (S-VAR) 1
Σ
x
i
o =
n
12 (S-VAR) 3
Σ (x
– o)
2
= i
x
n
– 1
12 (S-VAR) e2
2