Regression Calculation - Casio fx-9750GII User Manual

These values can also be directly obtained by displaying the
statistical data list and pressing
After this, pressing
variable characteristics.
For details on the meanings of these statistical values, see "Displaying the Calculation Results
of a Drawn Paired-Variable Graph" (page 6-14).

Regression Calculation

In the explanations from "Linear Regression Graph" to "Logistic Regression Graph", regression
calculation results were displayed after the graph was drawn. Here, each coefficient value of
the regression line or regression curve is expressed as a number.
You can directly determine the same expression from the data input screen.
Pressing (CALC)
ax b a bx
• { + }/{ + }/{Med}/{X^2}/{X^3}/{X^4}/{Log}/{
{linear regression (
regression}/{cubic regression}/{quartic regression}/{logarithmic regression}/{exponential
ae
regression (
{sinusoidal regression}/{logistic regression} parameters
Example To display single-variable regression parameters
The meanings of the parameters that appear on this screen are the same as those for "Linear
Regression Graph" to "Logistic Regression Graph".
Calculation of the Coefficient of Determination (r
You can use the STAT mode to calculate the coefficient of determination (r
regression, cubic regression, and quartic regression. The following types of MSe calculations
are also available for each type of regression.
(CALC)
or scrolls the statistical calculation result display so you can view
(REG) displays a function menu, which contains the following items.
ax b
+ form)}/{linear regression (
bx
form)}/{exponential regression (
(CALC) (REG) (X)
(2VAR).
ae bx ab x
^ }/{ ^ }/{Pwr}/{Sin}/{Lgst} ...
a bx
+ form)}/{Med-Med}/{quadratic
x
ab
form)}/{power regression}/
ax b
( + )
2
) and MSe
6-16
2 ) for quadratic