Casio CFX-9970G User Manual page 284

18 - 4
Calculating and Graphing Paired-Variable Statistical Data
k k k k k Power Regression Graph
P.254 Exponential regression expresses
standard power regression formula is
both sides we get In
the formula corresponds to linear regression formula Y =
k k k k k Sine Regression Graph
Sine regression expresses the relationship between specific pair of data (vari-
P.254
ables) as a trigonometric function. Residual mean square partial differentiation is
expressed in the form of a matrix, and the iteration method is used to determine
the coefficient that minimizes the residual mean square.
While the statistical data list is on the display, perform the following key operation.
y a
= In
6(g)3(Pwr)
6(DRAW)
a ......
regression coefficient
b ......
regression power
r ......
correlation coefficient
r
2 ..... coefficient of determination
y a bx c d
= ·sin( + ) +
6(g)5(Sin)
Iterat ........ number of iterations (Specify in the range of 1 to 16.)
Period ...... domain
1(CALC)
y
as a proportion of the power of
y a x b
= , so if we take the logarithms of
"
b x
+ " In . Next, if we say X = In
x
. The
x y
, Y = In , and
a b
+ X.
1 2 3 4 5
a a
= In ,
6
6
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