Regression Calculation (Reg Mode); Linear Regression - UNITED OFFICE LCD?8310 User Manual

Regression calculation (REG mode)

Note!
Use the key to activate Reg mode to complete statistical
calculations with regressions. REG:

Linear regression

Logarithmic regression
Exponential regression
Power regression
Inverse regression
Quadratic regression
Data input always starts with
l
The values produced by a regression calculation depend on the
l
values input, and results can be recalled using the key operations
shown in the table below.
Linear regression
The regression equation for linear regression is: y = A+Bx.
Example 1.: Atmospheric pressure vs. temperature
Perform linear regression to determine the
Tempera- Atmosphe-
regression formula terms and correlation
ture ric pressure
coefficient for the data nearby. Next, use the
10°C 1003 hPa
regression formula to estimate atmospheric
15°C 1005 hPa
pressure at 18°C and temperature at 1000
20°C 1010 hPa hPa.
25°C 1011 hPa
30°C 1014 hPa
to clear statistical memory.
Regression coefficient A
Regression coefficient B
Regression coefficient C
Correlation coefficient r
(estimated value of x) p
(estimated value of y) t
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