Casio CFX-9970G User Manual page 283

Calculating and Graphing Paired-Variable Statistical Data
k k k k k Logarithmic Regression Graph
P.254 Logarithmic regression expresses
logarithmic regression formula is
formula corresponds to linear regression formula
a ......
b ......
r ......
r 2
..... coefficient of determination
k k k k k Exponential Regression Graph
P.254 Exponential regression expresses
x
. The standard exponential regression formula is
logarithms of both sides we get In
the formula corresponds to linear regression formula Y =
a ......
b ......
r ......
r
2 ..... coefficient of determination
6(g)1(Log)
6(DRAW)
regression constant term (intercept)
regression coefficient (slope)
correlation coefficient
6(g)2(Exp)
6(DRAW)
regression coefficient
regression constant term
correlation coefficient
y
as a logarithmic function of
y a b x
= + " In , so if we say that X = In
y a
=
1 2 3 4 5
y
as a proportion of the exponential function of
y a " e
=
y a bx
= In + . Next, if we say Y = In
1 2 3 4 5
18 - 4
x
. The standard
x
, the
b
+ X.
bx
, so if we take the
y a
, and
a bx
+ .
6
a
= In ,
6
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