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Select this menu item: When you want to obtain this:
(a)
Regression coefficient constant
term a
(b)
Linear coefficient b of the
regression coefficients
(c)
Quadratic coefficient c of the
regression coefficients
(xˆ
1
)
Estimated value of x1
(xˆ
2
)
Estimated value of x2
(yˆ)
Estimated value of y
Quadratic Regression Calculation Examples
Select quadratic regression and input the following data (Statistics: Off)
x y x y
1.0 1.0 2.1 1.5
1.2 1.1 2.4 1.6
1.5 1.2 2.5 1.7
1.6 1.3 2.7 1.8
1.9 1.4 3.0 2.0
(Select Type) (y=a+bx+cx
2
)
1 1.2 1.5 1.6 1.9
2.1 2.4 2.5 2.7 3
1 1.1 1.2 1.3 1.4
1.5 1.6 1.7 1.8 2
78
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