E-117
A
Commands when Linear Regression
Calculation (A+BX) Is Selected
With linear regression, regression is performed in
accordance with the following model equation.
y
=
A
+
BX
The following are the commands that appear on the sub-
menus that appear when you select
4
(Sum),
5
(Var),
6
(MinMax), or
7
(Reg) on the STAT menu while linear
regression is selected as the statistical calculation type.
Calculation formula used for each command
A
=
n
Σ
y
–
B.
Σ
x
o
Σ
x
n
=
m
y
–
A
B
=
x
σ
n
n
=
Σ
(
x
–
o
)
2
x
σ
n
–1
n
– 1
=
Σ
(
x
–
o
)
2
p
Σ
y
n
=
y
σ
n
n
=
Σ
(
y
–
p
)
2
y
σ
n
–1
n
– 1
=
Σ
(
y
–
p
)
2
B
=
n
.
Σ
x
2
–
(
Σ
x
)
2
n
.
Σ
xy
–
Σ
x
.
Σ
y
r
=
{
n
.
Σ
x
2
–
(
Σ
x
)
2
}{
n
.
Σ
y
2
–
(
Σ
y
)
2
}
n
.
Σ
xy
–
Σ
x
.
Σ
y
n
=
A
+
Bx
