Linear Regression - Casio fx-270MS User Manual

To recall this type of value:
Regression coefficient A
Regression coefficient B
Regression calculation other than quadratic regression
Correlation coefficient
• The following table shows the key operations you should
use to recall results in the case of quadratic regression.
To recall this type of value:
Regression coefficient C
• The values in the above tables can be used inside of
expressions the same way you use variables.
u Linear Regression
• The regression formula for linear regression is:
y x
= A + B
Σx
2
Σx
n
Σy
2
Σy
Σxy
o
xσ
n
xσ
n-1
p
yσ
n
yσ
n-1
m
n
Σx
3
Σx
2
y
Σx
4
m
1
m
2
n
.
Perform this key operation:
A U 1
A U 2
A U 3
A U r 1
A U r 2
A U r 3
A X 1
A X 2
A X 3
A X r 1
A X r 2
A X r 3
A X r r 1
A X r r 2
A X r r 3
r
A X r r r 1
A X r r r 2
Perform this key operation:
A U r r 1
A U r r 2
A U r r 3
A X r r 3
A X r r r 1
A X r r r 2
A X r r r 3
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