Casio fx-570ES User Manual page 53

Appendix Linear Regression Calculation: <#061> to <#064>
• Examples <#062> through <#064> all use the data input in Example
<#061>.
*1 Estimated Value
*2 Estimated Value
Commands when Quadratic Regression Calculation
2
(_+CX ) Is Selected
With quadratic regression, regression is performed in accordance
with the following model equation.
See Appendix <#065> for information about the calculation
formula used for each command.
Reg Sub-menu (11(STAT)7(Reg))
Select this
menu item:
1A
2B
3C
m
4
1
m
5
2
n
6
• Sum sub-menu (sums), Var sub-menu (number of samples, mean,
standard deviation), and MinMax sub-menu (maximum value,
minimum value) operations are the same those for linear regression
calculations.
Appendix Quadratic Regression Calculation: <#066> to <#068>
• Examples <#066> through <#068> all use the data input in
Example <#061>.
Comments for Other Types of Regression
For details about the calculation formula of the command included
in each regression type, refer to the indicated calculation formulas
( Appendix <#069> to <#073>).
Statistical Calculation
Type
Logarithmic Regression
(ln X)
e
Exponential Regression
e
( ^X)
→ m
(y
= –3
→ n
(x
= 2
y A
= +
When you want to obtain this:
Regression coefficient constant term A
Linear coefficient B of the regression coefficients
Quadratic coefficient C of the regression
coefficients
Estimated value of
Estimated value of
Estimated value of
)
= ?
)
= ?
BX CX
+
x
1
x
2
y
Model Equation
y A Bln X
= +
BX
y Ae
=
E-51
2
Calculation
Formula
<#069>
<#070>