Casio fx-5800P User Manual
Page 84
E-83
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
z7(STAT) 2(VAR) ccc1
Obtains coeffi cient a of the regression formula.
b
z7(STAT) 2(VAR) ccc2
Obtains coeffi cient b of the regression formula.
c
z7(STAT) 2(VAR) ccc3
This command is supported for quadratic regression only.
It obtains coeffi cient c of the regression formula.
r
z7(STAT) 2(VAR) ccc4
Obtains correlation coeffi cient r.
This command is not supported for quadratic regression.
ˆ x
1
z7(STAT) 2(VAR) ccc5
Obtains the estimated value of
x
for a value of
y
, which is assumed to be the value input
immediately before this command.
ˆ x
2
z7(STAT) 2(VAR) ccc6
This command is supported for quadratic regression only.
It obtains the second estimated value of
x
for a value of
y
, which is assumed to be the value
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
m
1
command.
ˆ y
z7(STAT) 2(VAR) ccc7
Obtains the estimated value of
y
for a value of
x
, which is assumed to be the value input
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:
Go here:
Linear Regression
<#02>
Quadratic Regression
<#03>
Logarithmic Regression
<#04>
e
Exponential Regression
<#05>
ab
Exponential Regression
<#06>