Casio fx-7400G PLUS Statistical Graphs and Calculations - Manual (Page 23)

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Statistical Graphs and Calculations Chapter 7
4(DRAW)
The following are the meanings of the above parameters.
a ...... Regression coefficient
b ...... Regression constant term
r ...... Correlation coefficient
k k k k k Power Regression Graph
Exponential regression expresses y as a proportion of the power of x . The standard
power regression formula is y = a × x b , so if we take the logarithms of both sides we
get log y = log a + b × log x . Next, if we say X = log x , Y = log y , and A = log a , the
formula corresponds to linear regression formula Y = A + b X.
[3(Pwr)
4(DRAW)
The following are the meanings of the above parameters.
a ...... Regression coefficient
b ...... Regression power
r ...... Correlation coefficient
P.106
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