Casio fx-115ES - Manual (Page 54)

E-52
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
Model Equation
Calculation
Type Formula
Logarithmic Regression
y = A + Bln X
<#069>
(ln X)
e Exponential Regression
y = Ae BX
<#070>
( e ^X)
ab Exponential Regression
y = AB X
<#071>
(A•B^X)
Power Regression (A•X^B)
y = AX B
<#072>
Inverse Regression (1/X)
y = A +
X
B
<#073>
Appendix Comparison of Regression Curves
• The following example uses the data input in Example <#061>.
<#074> Compare the correlation coefficient for logarithmic,
e
exponential, ab exponential, power, and inverse regression.
(FREQ: OFF)
Appendix Other Types of Regression Calculation: <#075> to
<#079>
Command Usage Tips
• The commands included in the Reg sub-menu can take a long
time to execute in logarithmic, e exponential, ab exponential, or
power regression calculation when there are a large number of
data samples.
Base- n Calculations
(BASE-N)
The BASE-N Mode lets you perform arithmetic calculations, negative
value calculations, and logical operations with binary, octal, decimal,
and hexadecimal values.
All calculations in this section are performed in the BASE-N
Mode (N4).