Casio FC-200V - Manual (Page 124)

E-122
Calculation formula used for each command
A = – B
( )
– C
( )
n
Σy
n
Σx
n
Σx
2
B =
S xx
.
S x 2 x 2
– (S xx 2
)
2
S xy
.
S x 2 x 2
– S x 2 y
.
S xx 2
C =
S xx
.
S x 2 x 2
– (S xx 2
)
2
S x 2 y
.
S xx – S xy
.
S xx 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
)
m
1 =
2C
– B + B 2 – 4C ( A – y )
m
2
=
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
4 m
1
Estimated value of x
1
5 m
2
Estimated value of x
2
6 n Estimated value of y