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1-1 Advanced Statistics (STAT)
uu
uu
uFunction 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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uCalculation 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
(yi – (axi+ 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
(yi – (axi
3
+ bxi + cxi
+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)