Unit Conversion; Statistics Calculation; Computing Single Variable Statistics - Citizen SR-260 Instruction Manual

Unit conversion

in↔ ↔ ↔ cm
↔ ↔
12 in = ? cm
98 cm = ? in
(Note) : The operating procedure for unit conversion key, [
[ mmHg↔Kpa ], [ gal↔l ], [ lb↔kg ], [ OZ↔g ], is similar to the
above example.

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
x
2
x
_
x
s
CP
CPK
(Note) : In STAT mode, all function key are available, except base-n
calculation.
(Ex. 1) : Enter the following data to calculate
and CPK , where data 1 = 2, data 2~5 = 5, data 6-8 = 9, USL
value : 12, LSL value : 2
In STAT mode
Enter all data
12 [ A B ] [ 2ndF ]
[ in↔cm ]
98 [ 2ndF ] [ A B ]
[ 2ndF ] [ in↔cm ]

Statistics calculation

number of all data
sum of all data
sum of the squares
mean value
Sample Standard deviation
Population standard deviation
Precision capability
Process capability Min(CPU, CPL)
where CPU =
[ 2ndF ] [ STAT ]
[ DATA ] 2
[ DATA ] 5
USL – LSL
6
USL – x
3
DEG
DEG
DEG
E-15
DEG
DEG
2
x – x)
n – 1
2
x –
n
x – LSL
CPL =
3
2
x, x , n,
S T A T
S T A T
S T A T
30.48
38.58
],
↔
2
/ n
2
x) / n
_
x , S, CP,
0.00
2.
5.