Casio fx-3650P II - Paired-variable Statistical Calculations: Statistics Commands; SD Mode Statistical Commands; Mean and Standard Deviation Commands

E-34
Mean and Standard Deviation Commands (VAR Menu)
¯x
1
2
(S-VAR)
1
(VAR)
1
Obtains the mean of the sample
x
-data.
o
Σx
i
n
=
σ
x
1
2
(S-VAR)
1
(VAR)
2
Obtains the population standard deviation
of the sample
x
-data.
σx
n
=
Σ(x
i
– o)
2

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

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

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
s
x
1
2
(S-VAR)
1
(VAR)
3
Obtains the sample standard deviation of
the sample
x
-data.
sx
n – 1
=
Σ(x
i
– o)
2
¯y
1
2
(S-VAR)
1
(VAR)
e
1
Obtains the mean of the sample
y
-data.
p
Σy
i
n
=
σ
y
1
2
(S-VAR)
1
(VAR)
e
2
Obtains the population standard deviation
of the sample
y
-data.
σ
y
n
=
Σ (y
i
– y)
2
s
y
1
2
(S-VAR)
1
(VAR)
e
3
Obtains the sample standard deviation of
the sample
y
-data.
sy
n – 1
=
Σ (y
i
– y)
2
Regression Coefficient and Estimated Value Commands for Non-
quadratic Regression (VAR Menu)
a
1
2
(S-VAR)
1
(VAR)
ee
1
Obtains constant term a of the regression formula.
b
1
2
(S-VAR)
1
(VAR)
ee
2
Obtains coefficient b of the regression formula.