Casio FX-9750G PLUS User's Manual & Technical Reference page 291

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
6(g)1(Log)
6(DRAW)
a ......
b ......
r ......
r
..... coefficient of determination
2
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 +
6(g)2(Exp)
6(DRAW)
a ......
b ......
r ......
r
..... coefficient of determination
2
y
regression constant term
regression coefficient
correlation coefficient
regression coefficient
regression constant term
correlation coefficient
y
as a logarithmic function of
a b × In x
= + , so if we say that X = In
y a
=
1 2 3 4 5
y
as a proportion of the exponential function of
a × e
y
=
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
, and A = In
bx
.
6
a
,
6
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