Casio FX-9750G plus User Manual page 292

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Calculating and Graphing Paired-Variable Statistical Data
k k k k k Power Regression Graph
Exponential regression expresses
standard power regression formula is
y
sides we get In
formula corresponds to linear regression formula Y = A +
6(g)3(Pwr)
6(DRAW)
a ......
regression coefficient
b ......
regression power
r ......
correlation coefficient
r
..... coefficient of determination
2
k k k k k Sine Regression Graph
Sine regression is best applied for phenomena that repeats within a specific
range, such as tidal movements.
y a bx
= ·sin(
While the statistical data list is on the display, perform the following key operation.
6(g)5(Sin)
6(DRAW)
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.
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y
as a proportion of the power of
y
=
a b × In x
= In + . Next, if we say X = In
c d
+ ) +
a × x
b , so if we take the logarithm of both
x y
, Y = In , and A = In
b
X.
1 2 3 4 5
x
. The
a
, the
6
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