Quadratic Regression - UNITED OFFICE LCD?8310 User Manual

Enter REG Mode (Linear Regression):
Memory Clear:
10 1003 15
20 1010 25
30
(Regression coefficient A)
(Regression coefficient B)
(Correlation coefficient r)
(Atmospheric pressure at 18°C)
(Temperature at 1000 hPa)

Quadratic regression

The regression equation for quadratic regression is:
l
2
y = A+Bx+Cx
Input data using the following key sequence.
l
<x−data> <y−data>
Example:
l
xi yi
Perform quadratic regression to determine the
29 1.6
regression formula terms and correlation
coefficient for the data nearby. Next, use the
50 23.5
regression formula to estimate the values for t
74 38.0
(estimated value of y) for xi = 16 and p
103 46.4
(estimated value of x) for yi = 20.
118 48.0
Enter REG mode (Quadratic regression)
Memory Clear:
29 1.6 50
74 38.0 103
118
(Regression coefficient A)
(Regression coefficient B)
(Regression coefficient C)
1005
1011
30.
1014 REG..............
997.4
0.56
0.982607368
18
1007.48
1000
4.642857143
23.5
118.
46.4
REG
48.0
−35.599856934
1.495939413
−03
−6.71629667
16