Casio fx-50F, User Manual

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E-44
1 2
(S-VAR)
1
(VAR) e
1 E
* This is one example of possible calculation results.
A
REG Mode Statistical Command Reference
Sum and Number of Sample Command (S-SUM Menu)
y y
σ
n y
σ
n
–1
1 2 3
y y
σ
n y
σ
n
–1
1 2 3
y
14
y
14
ƙ x 2 1 1
(S-SUM)
1
Obtains the sum of squares of the sample
x
-data.
Σ
x
2
=
Σ
x
i
2
ƙ 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.
n
= (number of
x
-data items)
ƙ 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
ƙ y 1 1
(S-SUM)
e
2
Obtains the sum of the sample
y
-data.
Σ
y
=
Σ
y
i
ƙ 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
ƙ x 2 y 1 1
(S-SUM) d
1
Obtains the sum of squares of the sample
x
-data multiplied by the sample
y
-data.
Σ
x
2
y
=
Σ
x
i
2
y
i
ƙ x
3
1 1
(S-SUM) d
2
Obtains the sum of cubes of the sample
x -data.
Σ
x
3
=
Σ
x
i
3
ƙ x 4
1 1
(S-SUM) d
3
Obtains the sum of the fourth power of the
sample
x
-data.
Σ
x
4
=
Σ
x
i
4
Mean and Standard Deviation Commands (VAR Menu)
¯ x 1 2
(S-VAR)
1
(VAR)
1
Obtains the mean of the sample
x
-data.
o
Σ
x
i
n
= o
Σ
x
i
n
=
x
σ
n
1 2
(S-VAR)
1
(VAR)
2
Obtains the population standard deviation
of the sample
x
-data.
x
σ
n
n
=
Σ
( x
i
– o ) 2
x
σ
n
n
=
Σ
( x
i
– o ) 2