United-office LCD−8310 Instrukcja Użytkownika Pobierz pdf (Strona 16)

Enter REG Mode (Linear Regression):

Memory Clear:

10 1003 15 1005

20 1010 25 1011

30 1014

(Regression coefficient A)

(Regression coefficient B)

(Correlation coefficient r)

(Atmospheric pressure at 18°C)

(Temperature at 1000 hPa)

1000

Quadratic regression

l The regression equation for quadratic regression is:

y = A+Bx+Cx

l Input data using the following key sequence.

<x−data>

<y−data>

l Example:

xi yi

29 1.6

50 23.5

74 38.0

103 46.4

118 48.0

Enter REG mode (Quadratic regression)

Memory Clear:

29 1.6 50 23.5

74 38.0 103 46.4

118 48.0

(Regression coefficient A)

(Regression coefficient B)

(Regression coefficient C)

30.

REG..............

997.4

0.56

0.982607368

1007.48

4.642857143

Perform quadratic regression to determine the

regression formula terms and correlation

coefficient for the data nearby. Next, use the

regression formula to estimate the values for 

(estimated value of y) for xi = 16 and 

(estimated value of x) for yi = 20.

118.

REG

−35.599856934

1.495939413

−6.71629667

−03

1 2 ... 11 12 13 14 15 16 17 18 19 20 21 22 23 24

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