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E-41
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. To
determine the mean (
o) value of the current input sample data, for example, perform the
operation shown below.
12(S-VAR)
1E
* This is one example of possible calculation results.
A SD Mode Statistical Command Reference
x xσn xσn
1
12 3
x xσn xσn
1
12 3
x
2533333333
x
2533333333
ƙx211(S-SUM)1
Obtains the sum of squares of the sample
data.
Σ x2 = Σ xi2
ƙx11(S-SUM)2
Obtains the sum of the sample data.
Σ x = Σ xi
n 11(S-SUM)3
Obtains the number of samples.
n = (number of
x-data items)
¯ x 12(S-VAR)
1
Obtains the mean.
oΣxi
n
=
x σn12(S-VAR)
2
Obtains the population standard deviation.
x
σnn
=Σ(xio)2
x σn–1 12(S-VAR)
3
Obtains the sample standard deviation.
x
σn–1 n – 1
=Σ(xio)2
minX 12(S-VAR)
e1
Determines the minimum value of the
samples.
maxX 12(S-VAR)
e2
Determines the maximum value of the
samples.
42


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