Datexx DS-834, Руководство пользователя

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Unit conversion
In
↔ ↔ ↔ ↔ ↔
cm
12 ln = ? cm 12 [ A
→
B ] [ 2ndF ]
DEG
30.48
[ In
↔
cm ]
98 cm = ? ln 98 [ 2ndF ] [ A
←
B ]
DEG
38.58
[ 2ndF ] [ In
↔
cm ]
(Note) : The operating procedure for unit conversion key,
[ ℉
↔
℃ ], [ mmHg
↔
Kpa ], [ gal
↔
l ], [ lb
↔
kg ], [ OZ
↔
g ],
is similar to the above example.
Statistics calculation
Computing single variable statistics
Select the mode by pressing [ STAT ] key and make sure “ STAT ”
indictor appears on the display.
The STAT mode enables you to calculate the following single
variable statistics :
n number of all data
Σ x sum of all data
Σ x
2
sum of the squares
mean value
s Sample Standard deviation
σ Population standard deviation
CP Precision capability
CPK Process capability Min(CPU, CPL)
where CPU = CPL =
(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
2
, n, , S,
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 ]
DEG STAT
0.00
Enter all data [ DATA ] 2
DEG STAT
2.
[ DATA ] 5
DEG STAT
5.
3
σ
– LSL x
x
6
σ
USL – LSL
x
3
σ
USL –
E - 15
x
Σ
x
2
–
(Σ
x)
2
/ n
n
Σ x 2 – (Σ x) 2 / n
n – 1