Casio fx-5800P User Manual page 84

Regression Coeffi cient and Estimated Value Commands
The values obtained by the following commands depend on the regression formula used for
the calculation. The regression formula used is the one that is applicable for the regression
calculation result screen (page 78) that was last displayed in the REG Mode.
a
Obtains coeffi cient a of the regression formula.
b
Obtains coeffi cient b of the regression formula.
c
This command is supported for quadratic regression only.
It obtains coeffi cient c of the regression formula.
r
Obtains correlation coeffi cient r.
This command is not supported for quadratic regression.
ˆ x
1
Obtains the estimated value of
immediately before this command.
ˆ x
2
This command is supported for quadratic regression only.
It obtains the second estimated value of
input immediately before this command. When used in a calculation that is not a quadratic
regression calculation, this command produces the same results as the
ˆ y
Obtains the estimated value of
immediately before this command.
A Regression Coeffi cient and Estimated Value Calculations
The formulas used by the regression coeffi cient and estimated value commands depend
on the regression calculation type. For details about regression calculation formulas, see
<#02> and <#08> in the separate Supplement.
For more information about this type of regression calculation:
Linear Regression
Quadratic Regression
Logarithmic Regression
e
Exponential Regression
ab
Exponential Regression
x y
for a value of , which is assumed to be the value input
x
for a value of
y x
for a value of , which is assumed to be the value input
E-83
7 (STAT) 2 (VAR)
7 (STAT) 2 (VAR)
7 (STAT) 2 (VAR)
7 (STAT) 2 (VAR)
7 (STAT) 2 (VAR)
7 (STAT) 2 (VAR)
y
, which is assumed to be the value
1
7 (STAT) 2 (VAR)
Go here:
<#02>
<#03>
<#04>
<#05>
<#06>
1
2
3
4
5
6
command.
7