Casio FX-9750G PLUS User's Manual & Technical Reference page 292

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
sides we get In
formula corresponds to linear regression formula Y = A +
k k k k k Sine Regression Graph
P.254 Sine regression is best applied for phenomena that repeats within a specific
range, such as tidal movements.
While the statistical data list is on the display, perform the following key operation.
Drawing a sine regression graph causes the angle unit setting of the calculator to
automatically change to Rad (radians). The angle unit does not change when you
perform a sine regression calculation without drawing a graph.
264
× In
y a b
= In +
6(g)3(Pwr)
6(DRAW)
a ......
regression coefficient
b ......
regression power
r ......
correlation coefficient
r
..... coefficient of determination
2
y a bx c d
= ·sin( + ) +
6(g)5(Sin)
6(DRAW)
y
as a proportion of the power of
y a × x
b
= , so if we take the logarithm of both
x
. Next, if we say X = In
x
. The
x y
, Y = In , and A = In
b
X.
1 2 3 4 5
a
, the
6
6