Casio ALGEBRA FX 2.0 Manual page 18

Calculating and Graphing Paired-Variable Statistical Data
k k k k k Power Regression Graph
Power regression expresses
regression formula is
b x
× In . Next, if we say X = In
regression formula Y =
4(CALC)j(Power)
6(DRAW)
The following is the power regression model formula.
b
y a x
=
•
a .............
b .............
r ..............
r .............
2
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.
4(CALC)v(Sin)
6(DRAW)
Drawing a sinusoidal 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
sinusoidal regression calculation without drawing a graph.
• 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 logarithms of both sides we get In
×
x y
, Y = In
a b
+ X.
regression coefficient
regression power
correlation coefficient
coefficient of determination
bx c d
+ ) +
6-3-9
x
a a
, and = In , the formula corresponds to linear
19990401
. The standard power
y
= In
a
+