คู่มือผู้ใช้

Th-36
maxX 1 2 (S-VAR) 2 (MINMAX) 2
 x 
minY 1 2 (S-VAR) 2 (MINMAX) e 1
 y 
maxY 1 2 (S-VAR) 2 (MINMAX) e 2
 y 



 a
a =
n
Σy
i
– b
.
Σx
i
 b
b =
n
.
Σx
i
2
–
(
Σx
i
)
2
n
.
Σx
i
y
i
– Σx
i
.
Σy
i
 r
r =
{n
.
Σx
i
2
–
(
Σx
i
)
2
}{ n
.
Σy
i
2
–
(
Σy
i
)
2
}
n
.
Σx
i
y
i
– Σx
i
.
Σy
i
 m
m
y – a
b
=
 n
n = a + b x


 a
a = – b
( )
– c
( )
n
Σy
i
n
Σx
i
n
Σx
i
2
 b
b =
Sxx
.
Sx
2
x
2
– (Sxx
2
)
2
Sxy
.
Sx
2
x
2
– Sx
2
y
.
Sxx
2
 c
c =
S xx
.
S x
2
x
2
– (S xx
2
)
2
S x
2
y
.
S xx
– S
xy
.
S xx
2

( Σx
i
)
2
Sxx = Σx
i
2
–
n
Sxy = Σx
i
y
i
–
n
(Σx
i
.
Σy
i
)
Sxx
2
= Σx
i
3
–
n
( Σx
i
.
Σx
i
2
)
Sx
2
x
2
= Σx
i
4
–
n
(Σx
i
2
)
2
Sx
2
y = Σx
i
2
y
i
–
n
(Σx
i
2
.
Σy
i
)