Casio FX-7400G User Manual page 111

Statistical Graphs and Calculations
The following are the meanings of the above parameters.
a ......
b ......
r ......
k k k k k Power Regression Graph
Exponential regression expresses
P.99
power regression formula is
(G-Type)
get log
corresponds to linear regression formula Y =
[2(Exp)
4(DRAW)
Regression coefficient
Regression constant term
Correlation coefficient
y a b x
= log + $ log . Next, if we say X = log
[3(Pwr)
4(DRAW)
y
as a proportion of the power of
y a x b
= , so if we take the logarithms of both sides we
$
x
, Y = log
a b
+
Chapter 7
1 2 3
x
. The standard
y a a
, and = log , the formula
X.
1 2 3
4
4
108