Logarithmic Regression Graph; Exponential Regression Graph - Casio fx-9860G Series User Manual

Calculating and Graphing Paired-Variable Statistical Data
k Logarithmic Regression Graph
Logarithmic regression expresses
regression formula is
linear regression formula
1(CALC)6( )2(Log)
6(DRAW)
The following is the logarithmic regression model formula.
y a b
= + ·ln
a
...............regression constant term
b
............... regression coeffi cient
r
............... correlation coeffi cient
r
2 .............coeffi cient of determination
MSe
........mean square error
k Exponential Regression Graph
Exponential regression expresses
standard exponential regression formula is
y
sides we get In = In
to linear regression formula Y = A +
1(CALC)6( )3(Exp)
6(DRAW)
The following is the exponential regression model formula.
y a e bx
= ·
a
...............regression coeffi cient
b
...............regression constant term
r
...............correlation coeffi cient
r
2 .............coeffi cient of determination
MSe
........mean square error
6-3-8
y
as a logarithmic function of
y a b x
= + × In , so if we say that X = In
y a b
= + X.
x
y
as a proportion of the exponential function of
a bx
+ . Next, if we say Y = In
bx
.
20070201
x
. The standard logarithmic
x
, the formula corresponds to
bx
y a e
= × , so if we take the logarithms of both
y a
, and A = In , the formula corresponds
x
. The