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Viewing Statistics Data, Adding a Data Item, Editing Statistics Data, Delete Error, Weighted Data - calculator

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CP CPK precision capability USL − LSL 6σ process capability Min(CPU, CPL) where CPU = USL − x 3σ CPL = x − LSL 3σ Note: In statistics mode, all function keys are available except those used for base-n calculations. Ex. 9: Enter the following data {2, 5, 5, 5, 5, 9, 9, and 9} and calculate Σx, Σx2, n, x , S, CP, and CPK, where USL value = 12 and LSL value = 2. In STAT mode Enter all data x= ? n = ? S = ? Σx = ? Σx 2 = ? σ= ? CP = ? [ 2ndF ] [ STAT ] [ DATA ] 2 [ DATA ] 5 [ DATA ] 5 [ DATA ] 5 [ DATA ] 5 [ DATA ] 9 [ DATA ] 9 [ DATA ] 9 [ENTER] [ x ] [ n ] [ S ] [ 2ndF] [ Σx ] [ 2ndF ] [ Σx2] [ 2ndF ] [ σ ] [ 2ndF ] [ CP ] 12 [ENTER] 2 [ENTER] DEG STAT 0.00 DEG STAT 2. DEG STAT 5. DEG STAT 5. DEG STAT 5. DEG STAT 5. DEG STAT 9. DEG STAT 9. DEG STAT 9. DEG STAT 0.00 DEG STAT 6.13 DEG STAT 8.00 DEG STAT 2.59 DEG STAT 49.00 DEG STAT 347.00 DEG STAT 2.42 σ DEG STAT 12. CP USL DEG STAT 2. CP LSL DEG STAT 0.69 CP CPK = ? [ 2ndF ] [ CPK ] [ENTER] [ENTER] DEG STAT 12.00 CPK USL DEG STAT 2.00 CPK LSL DEG STAT 0.57 CPK Note: The calculator retains the data you have entered until you exit statistics mode. The data is retained even if you turn off the calculator or it automatically turns off. Viewing Statistics Data Press [ DATA ] or [ENTER] in edit (ED) mode to view the statistics data you have entered. (If you press [ DATA ] the item number of the data appears briefly before the value.) Ex.10: View the data entered in Ex. 9. Method 1 1. Press [ 2ndF ] [ EDIT ] to enter edit mode. 2. Press [ DATA ] once to view the first data item. DEG ED STAT dAtA 1 1.5 seconds → DEG ED STAT 2.00 3. Continue pressing [ DATA ] to display each data item. You will see data 2, 5.00, data 3, 5.00, data 4, 5.00, data 5, 5.00, data 6, 9.00, data 7, 9.00, data 8, 9.00 in sequence. Method 2 1. Press [ENTER] once to view the first data item. DEG ED STAT 2.00 2. Continue pressing [ENTER] to display each data item. You will see 5.00, 5.00, 5.00, 5.00, 9.00, 9.00, 9.00 in sequence. Adding a Data Item Ex. 11: To add a 9th data item, of value 10, to the Ex. 9 dataset: 1. Press [ DATA ] 10 DEG ED STAT 10. The calculator updates the statistics as you enter data. You can then recall the statistics to get : x = 6.56, n = 9.00, S = 2.74, Σx = 59.00, Σx 2 = 447.00 and σ= 2.59. Editing Statistics Data Ex.12: Change the value of data item 1 in Ex. 9 from 2 to 3. Method 1 1. Press 2 [ 2ndF ] [ DEL ] 3 Method 2 1. Press [ 2ndF ] [ EDIT ] DEG ED STAT 0.00 2. Display 2 by pressing [ DATA ] or [ENTER] DEG ED STAT 2.00 3. Enter 3 to overwrite 2. DEG ED STAT 4. Press [ENTER] to make the change. 5. Press [ 2ndF ] [ EDIT ] to exit edit mode. Ex.13: Based on Ex.9, delete the first data entry (of value 2). Method 1 1. Press 2 [ 2ndF ] [ DEL ] to delete 2. Method 2 1. Press [ 2ndF ] [ EDIT ] DEG ED STAT 3. 0.00 2. Display 2 by pressing [ DATA ] or [ENTER]. DEG ED STAT 2.00 3. Press [ 2ndF ] [ DEL ] DEG ED STAT 5.00 4. Press [ 2ndF ] [ EDIT ] to exit edit mode. Delete Error If you try to delete a value that is not in the dataset, dEL Error appears. (Existing data is not affected.) Ex.14: Delete 7 from the dataset in Ex.9. 1. Press 7 [ 2ndF ] [ DEL ] DEG STAT dEL Error 2. Press any key to clear the message. DEG STAT Ex.15: Delete 5 × 5 from the dataset in Ex.9. 0.00 1. Press 5 [ × ] 5 [ 2ndF ] [ DEL ] DEG STAT dEL Error 2. Press any key to clear the message. DEG STAT 0.00 Weighted Data Entry Method Instead of entering each data item individually, you can enter the value and the number of occurrences of that value (up to 255). The data from Ex.9 can be entered as follows: Value Number of occurrences Alternative method 2 1 [ DATA ] 2 5 4 [ DATA ] 5 [ × ] 4 9 3 [ DATA ] 9 [ × ] 3 where item 1 = 2, items 2 to 5 = 5, and items 6 to 8 = 9. Error Conditions The indicator FULL appears when any of the following conditions occur. Further data entry is not possible. Press any key to clear the indicator. Providing that you remain in statistics mode, previously entered data entries are unaffected. • You attempt to enter more than 80 data items. • The number of occurrences of of any particular data value is greater than 255 • The product of the number of data items and the number of occurrences is greater than 20400. © Copyright 2002 Hewlett-Packard Development Company, L.P. Reproduction, adaptation or translation without prior written approval is forbidden except as allowed under copyright laws. Printed in China. HDPMR178E23 MWB HP part number: F2212-90001

  • 1
  • 2
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 statistics mode, all function keys are available except those
used for base-n calculations.
Ex. 9: Enter the following data {2, 5, 5, 5, 5, 9, 9, and 9} and
calculate
Σ
x,
Σ
x
2
, n,
x , S, CP, and CPK, where USL value =
12 and LSL value = 2.
In STAT mode
[ 2ndF ] [ STAT ]
DEG
STAT
0.00
[ DATA ] 2
DEG
STAT
2.
[ DATA ] 5
DEG
STAT
5.
[ DATA ] 5
DEG
STAT
5.
[ DATA ] 5
DEG
STAT
5.
[ DATA ] 5
DEG
STAT
5.
[ DATA ] 9
DEG
STAT
9.
[ DATA ] 9
DEG
STAT
9.
[ DATA ] 9
DEG
STAT
9.
Enter all data
[
ENTER
]
DEG
STAT
0.00
x = ?
[
x ]
DEG
STAT
6.13
n = ?
[ n ]
DEG
STAT
8.00
S = ?
[ S ]
DEG
STAT
2.59
Σ
x = ?
[ 2ndF] [
Σ
x ]
DEG
STAT
49.00
Σ
x
2
= ?
[ 2ndF ] [
Σ
x
2
]
DEG
STAT
347.00
σ
= ?
[ 2ndF ] [
σ
]
DEG
STAT
2.42
σ
CP
[ 2ndF ] [ CP ] 12
DEG
STAT
12.
USL
CP
[
ENTER
] 2
DEG
STAT
2.
LSL
CP
CP = ?
[
ENTER
]
DEG
STAT
0.69
CPK
[ 2ndF ] [ CPK ]
DEG
STAT
12.00
USL
CPK
[
ENTER
]
DEG
STAT
2.00
LSL
CPK
CPK = ?
[
ENTER
]
DEG
STAT
0.57
Note: The calculator retains the data you have entered until you exit
statistics mode. The data is retained even if you turn off the
calculator or it automatically turns off.
Viewing Statistics Data
Press [ DATA ] or [
ENTER
] in edit (ED) mode to view the statistics data
you have entered. (If you press [ DATA ] the item number of the data
appears briefly before the value.)
Ex.10: View the data entered in Ex. 9.
Method 1
1.
Press [ 2ndF ] [ EDIT ] to enter edit mode.
2.
Press [ DATA ] once to view the first data item.
DEG
ED
STAT
dAtA
1
1.5 seconds
→
DEG
ED
STAT
2.00
3.
Continue pressing [ DATA ] to display each data item. You will
see data 2, 5.00, data 3, 5.00, data 4, 5.00, data 5, 5.00, data 6,
9.00, data 7, 9.00, data 8, 9.00 in sequence.
Method 2
1.
Press [
ENTER
] once to view the first data item.
DEG
ED
STAT
2.00
2.
Continue pressing [
ENTER
] to display each data item. You will see
5.00, 5.00, 5.00, 5.00, 9.00, 9.00, 9.00 in sequence.
Adding a Data Item
Ex. 11: To add a 9th data item, of value 10, to the Ex. 9 dataset:
1.
Press [ DATA ] 10
DEG
ED
STAT
10.
The calculator updates the statistics as you enter data. You can then
recall the statistics to get :
x = 6.56, n = 9.00, S = 2.74,
Σ
x = 59.00,
Σ
x
2
= 447.00 and
σ
= 2.59.
Editing Statistics Data
Ex.12: Change the value of data item 1 in Ex. 9 from 2 to 3.
Method 1
1.
Press 2 [ 2ndF ] [ DEL ] 3
Method 2
1.
Press [ 2ndF ] [ EDIT ]
DEG
ED
STAT
0.00
2.
Display 2 by pressing [ DATA ] or
[
ENTER
]
DEG
ED
STAT
2.00
3.
Enter 3 to overwrite 2.
DEG
ED
STAT
3.
4.
Press [
ENTER
] to make the change.
5.
Press [ 2ndF ] [ EDIT ] to exit edit mode.
Ex.13: Based on Ex.9, delete the first data entry (of value 2).
Method 1
1.
Press 2 [ 2ndF ] [ DEL ] to delete 2.
Method 2
1.
Press [ 2ndF ] [ EDIT ]
DEG
ED
STAT
0.00
2.
Display 2 by pressing [ DATA ] or
[
ENTER
].
DEG
ED
STAT
2.00
3.
Press [ 2ndF ] [ DEL ]
DEG
ED
STAT
5.00
4.
Press [ 2ndF ] [ EDIT ] to exit edit mode.
Delete Error
If you try to delete a value that is not in the dataset,
dEL Error
appears. (Existing data is not affected.)
Ex.14: Delete 7 from the dataset in Ex.9.
1.
Press 7 [ 2ndF ] [ DEL ]
DEG
STAT
dEL
Error
2.
Press any key to clear the message.
DEG
STAT
0.00
Ex.15: Delete 5 × 5 from the dataset in Ex.9.
1.
Press 5 [ × ] 5 [ 2ndF ] [ DEL ]
DEG
STAT
dEL
Error
2.
Press any key to clear the message.
DEG
STAT
0.00
Weighted Data Entry Method
Instead of entering each data item individually, you can enter the
value and the number of occurrences of that value (up to 255). The
data from Ex.9 can be entered as follows:
Value
Number of occurrences
Alternative method
2
1
[ DATA ] 2
5
4
[ DATA ] 5 [ × ] 4
9
3
[ DATA ] 9 [ × ] 3
where item 1 = 2, items 2 to 5 = 5, and items 6 to 8 = 9.
Error Conditions
The indicator
FULL
appears when any of the following conditions
occur. Further data entry is not possible. Press any key to clear the
indicator. Providing that you remain in statistics mode, previously
entered data entries are unaffected.
•
You attempt to enter more than 80 data items.
•
The number of occurrences of of any particular data value is
greater than 255
•
The product of the number of data items and the number of
occurrences is greater than 20400.
© Copyright 2002 Hewlett-Packard Development Company, L.P.
Reproduction, adaptation or translation without prior written approval
is forbidden except as allowed under copyright laws.
Printed in China.
HDPMR178E23
MWB
HP part number: F2212-90001