Casio FX-115ES-S-IH User Guide - Page 54

Calculations

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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 to ). Statistical Calculation Type Logarithmic Regression (ln X) e Exponential Regression (e^X) ab Exponential Regression (A•B^X) Model Equation y = A + Bln X y = AeBX y = ABX Power Regression (A•X^B) y = AXB Inverse Regression (1/X) y = A + B X Calculation Formula Appendix Comparison of Regression Curves • The following example uses the data input in Example . Compare the correlation coefficient for logarithmic, e exponential, ab exponential, power, and inverse regression. (FREQ: OFF) Appendix Other Types of Regression Calculation: to 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). E-52

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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
+
B
ln
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 (
N
4
).