Citizen SR-260N Manual De Instrucciones página 17

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

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