Casio fx-5800P, Руководство пользователя

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E-76
z 7
(STAT)
2
(VAR)
2
( o )
E
This is one example of possible calculation results.
For more information about statistical calculation commands, see the following section.
A
SD Mode Statistical Command Reference
n z 7
(STAT)
2
(VAR)
1
Obtains the number of samples.
n = (number of x
i
-data items)
¯ x z 7
(STAT)
2
(VAR)
2
Obtains the mean.
x
σ
n
z 7
(STAT)
2
(VAR)
3
Obtains the population standard deviation.
x
σ
n
–1
z 7
(STAT)
2
(VAR)
4
Obtains the sample standard deviation.
ƙ x 2 z 7
(STAT)
2
(VAR)
c
1
Obtains the sum of squares of the sample data.
Σ
x
2
=
Σ
x
i
2
ƙ x z 7
(STAT)
2
(VAR) c
2
Obtains the sum of the sample data.
Σ
x
=
Σ
x
i
minX
z
7
(STAT)
2
(VAR) cc
1
Determines the minimum value of the samples.
o
Σ
x
i
n
= o
Σ
x
i
n
=
x
σ
n
n
=
Σ
(
x
i
– o ) 2
x
σ
n
n
=
Σ
(
x
i
– o ) 2
x
σ
n
–1
n
– 1
=
Σ
( x
i
–
o
)
2
x
σ
n
–1
n
– 1
=
Σ
( x
i
–
o
)
2