Casio FX-350ES Appendix page 19

#051
Σy
A = – B
n
.
xy
S
B =
xx
S
2
x y
S
C =
xx
S
Σx
2
Sxx
=
Σxy
Sxy
=
Σx
2
Sxx
=
Σx
2 2
Sx x
=
Σx
2
Sx y
=
– B + B
m
=
1
– B – B
m
=
2
n = A + Bx + Cx
Σx
( )
– C
n
2 2
x x x
S – S
.
2 2
x x
S – (S
.
xx xy
S – S
.
2 2
x x
S – (S
Σx
2
( )
–
n
.
Σx Σy
(
–
n
Σx Σx
.
(
3
–
n
Σx
2
( )
4
–
n
Σx
2
(
2
y
–
n
2
– 4C
2C
2
– 4C
2C
2
Σx
2
( )
n
.
2 2
y xx
S
2 2
xx
)
.
2
xx
S
2 2
xx
)
)
2
)
2
.
Σy
)
A – y
(
A – y
(
–18 –
)
)