คู่มือผู้ใช้

Th-34
 ( VAR)
¯
x
12 (S-VAR) 1 (VAR) 1
 x 
o
Σx
i
n
=
σ
x
12 (S-VAR) 1 (VAR) 2
 x

σ x
n
=
Σ(x
i
– o)
2
Ȉ x
2
y 11 (S-SUM) d1
 x 

y 
Σ
x
2
y
=
Σ
x
i
2
y
i
Ȉ x
3
11 (S-SUM) d2
 x 
Σ
x
3
=
Σ
x
i
3
Ȉ x
4
11 (S-SUM) d3
 x 
Σ
x
4
=
Σ
x
i
4
sx 12 (S-VAR) 1 (VAR) 3
 x 

sx
n – 1
=
Σ (x
i
– o)
2
¯
y
12 (S-VAR) 1 (VAR) e1
 y 
p
Σ y
i
n
=
σ
y
12 (S-VAR) 1 (VAR) e2
 y

σ
y
n
=
Σ (y
i
– y)
2
sy 1 2 (S-VAR) 1 (VAR) e 3
 y 

sy
n – 1
=
Σ (y
i
– y)
2

( VAR)
a 1 2 (S-VAR) 1 (VAR) ee 1
 a 
b 1 2 (S-VAR) 1 (VAR) ee 2
 b 