Power Regression Graph; Sinusoidal Regression Graph - Casio fx-9860G AU User Manual

Calculating and Graphing Paired-Variable Statistical Data
k k k k k Power Regression Graph
Power regression expresses
regression formula is
× In
b x
. Next, if we say X = In
regression formula Y = A +
1(CALC)6(g)4(Pwr)
6(DRAW)
The following is the power regression model formula.
b
y a x
=
•
a .............
b .............
r ..............
r 2 .............
MSe
........ mean square error
k k k k k Sinusoidal Regression Graph
Sinusoidal regression is best applied for cyclical data.
The following is the sinusoidal regression model formula.
y a
= ·sin(
While the statistical data list is on the display, perform the following key operation.
1(CALC)6(g)5(Sin)
6(DRAW)
Make sure that the angle unit setting of the calculator is Rad (radians) when drawing a
sinusoidal regression graph. The sinusoidal regression calculation is performed using
radians, so the graph will cannot be drawn correctly if the angle unit setting is something
else.
• Certain types of data may take a long time to calculate. This does not indicate malfunction.
y
as a proportion of the power of
×
b
y a x
= , so if we take the logarithm of both sides we get In
x y
, Y = In
b
X.
regression coefficient
regression power
correlation coefficient
coefficient of determination
bx c d
+ ) +
6-3-9
x
a
, and A = In , the formula corresponds to linear
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. The standard power
y
= In
a
+