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E-122
Calculation formula used for each command
A = – B
(
)
– C
(
)
n
Σy
n
Σx
n
Σx
2
B =
Sxx
.
Sx
2
x
2
– (Sxx
2
)
2
Sxy
.
Sx
2
x
2
– Sx
2
y
.
Sxx
2
C =
Sxx
.
Sx
2
x
2
– (Sxx
2
)
2
Sx
2
y
.
Sxx
– S
xy
.
Sxx
2
(Σx)
2
Sxx = Σx
2
–
n
Sxy = Σxy –
n
(Σx
.
Σy)
Sxx
2
= Σx
3
–
n
(Σx
.
Σx
2
)
Sx
2
x
2
= Σx
4
–
n
(Σx
2
)
2
Sx
2
y = Σx
2
y –
n
(Σx
2
.
Σy)
m1 =
2C
– B +
B
2
– 4C
(
A
– y
)
m2 =
2C
– B –
B
2
– 4C
(
A
– y
)
n = A + Bx + Cx
2
Reg Sub-menu (17(S-MENU)7(Reg))
Select this
When you want to obtain this:
menu item:
1A Regression coefficient constant term A
2B
Linear coefficient B of the regression
coefficients
3C
Quadratic coefficient C of the regression
coefficients
4m1 Estimated value of x1
5m2 Estimated value of x2
6n Estimated value of y