20010101
1-1 Advanced Statistics (STAT)
u
uu
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u
Function Menu
The following shows the function menus for the STAT Mode list input screen.
Pressing a function key that corresponds to the added item displays a menu that lets you
select one of the functions listed below.
•
3
(TEST) ... Test (page1-2-1)
•
4
(INTR) ... Confidence interval (page1-3-1)
•
5
(DIST) ... Distribution (page1-4-1)
SORT and JUMP functions are located in the TOOL menu (
6
(
g
)
1
(TOOL)).
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uu
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u
Calculation of the Coefficient of Determination (r
2
) and MSE
You can use the STAT Mode to calculate the coefficient of determination (r
2
) for quadratic
regression, cubic regression, and quartic regression. The following types of MSE
calculations are also available for each type of regression.
• Linear Regression ...
MSE
=
Σ
1
n
–
2
i
=1
n
(
y
i
– (
ax
i
+
b
))
2
• Quadratic Regression ...
MSE
=
Σ
1
n
–
3
i
=1
n
(
y
i
– (
ax
i
+
bx
i
+
c
))
2
2
• Cubic Regression ...
MSE
=
Σ
1
n
–
4
i
=1
n
(
y
i
– (
ax
i
3
+
bx
i
+
cx
i
+
d
))
2
2
• Quartic Regression ...
MSE
=
Σ
1
n
–
5
i
=1
n
(
y
i
– (
ax
i
4
+
bx
i
3
+
cx
i
+
dx
i
+
e
))
2
2
1-1-1
Advanced Statistics (STAT)
