Power Regression Graph - Casio fx-9750GII User Manual

Power Regression Graph

Power regression expresses
regression formula is
y a b x
= In + × In . Next, if we say X = In
linear regression formula Y = A +
The following is the power regression model formula.
b
y a x
= ·
a
.............. regression coefficient
b
.............. regression power
Sinusoidal Regression Graph
Sinusoidal regression is best applied for cyclical data.
The following is the sinusoidal regression model formula.
y
=
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.
• Certain types of data may take a long time to calculate. This does not indicate malfunction.
Logistic Regression Graph
Logistic regression is best applied for time-based phenomena in which there is a continual
increase until a saturation point is reached.
The following is the logistic regression model formula.
y = y =
• Certain types of data may take a long time to calculate. This does not indicate malfunction.
Residual Calculation
y
Actual plot points (
regression calculations.
y
as a proportion of the power of
y a x b
= × , so if we take the logarithm of both sides we get In
x
b
X.
(CALC) ( ) (Pwr)
(DRAW)
a bx c d
·sin( + ) +
(CALC) ( ) (Sin)
(DRAW)
c c
1 + ae 1 + ae
–bx –bx
(CALC) ( ) ( )
(DRAW)
-coordinates) and regression model distance can be calculated during
x
y a
, Y = In , and A = In
(Lgst)
6-13
. The standard power
, the formula corresponds to