Инструкция по эксплуатации CITIZEN SR-260N
Страница 17
SR-260N_English_090324.rtf SIZE: 135x75mm / SCALE 2:1 / 2009/3/24
E16
Σ
x
2
sum
of
the
squares
x
mean
value
S
Sample Standard deviation
1
/
)
(
2
2
−
Σ
−
Σ
n
n
x
x
σ
Population
standard
deviation
n
n
x
x
/
)
(
2
2
Σ
−
Σ
CP Precision
capability
σ
6
LSL
USL
−
CPK Process capability Min(CPU, CPL)
where CPU =
σ
3
x
USL
−
CPL =
σ
3
LSL
x
−
(Note) : In STAT mode, all function key are available, except base-n
calculation.
(Ex. 1) : Enter the following data to calculate Σx, Σx
2
, n,
x
, S,
CP, and CPK , where data 1 = 2, data 2~5 = 5, data 6~8 =
9, USL value : 12, LSL value : 2
DEG
STAT
In STAT mode
[ 2ndF ] [ STAT ]
0. 0 0
DEG
STAT
[ DATA ] 2
2.
DEG
STAT
[ DATA ] 5
5.
DEG
STAT
[ DATA ] 5
5.
DEG
STAT
[ DATA ] 5
5.
DEG
STAT
[ DATA ] 5
5.
DEG
STAT
[ DATA ] 9
9.
DEG
STAT
[ DATA ] 9
9.
DEG
STAT
[ DATA ] 9
9.
DEG
STAT
Enter all data
[ = ]
0. 0 0
DEG
STAT
x
= ?
[
x
]
6. 1 3
DEG
STAT
n = ?
[ n ]
8. 0 0
DEG
STAT
S = ?
[ S ]
2. 5 9
DEG
STAT
Σ
x = ?
[ 2ndF] [Σx ]
4 9. 0 0