Statistics- what process would you follow to determine what is causing the instability
Question # 00133955
Posted By:
Updated on: 11/14/2015 11:51 AM Due on: 12/14/2015
XMR CHART
Objective:
Earlier, you have made some progress as a result of the stem-and-leaf diagram. The
team
changed the process so that returning patients were processed ahead of the first-time patients.
This dramatically decreased the overall wait times because the returning patients
were
already in the system. The team also learned how to improve the process
through the use of designed experiments. There were other improvements made through the
use of other Six Sigma tools and techniques (aside from your project deliverables) and now the
wait times are acceptable. Now, you want to ensure that they are staying that way and you want
to practice "prevention" versus "detection." Part of your CONTROL strategy is to
employ
the use of an on-going capability study to ensure 'the plates are still spinning'--so-to-speak.
And, the next deliverable will do that, but prior to performing a capability study, one
must make sure the process is in statistical control. This is good, because the team
decided to use a control chart as part of the CONTROL phase anyhow, so this
will
work out fine. In fact, let's do one now…just to make sure we are in statistical
control.
Data:
Wait time (minutes) in order of occurrence
1
10
2
17
3
29
4
39
5
55
6
64
7
28
8
6
9
5
10
3
11
39
12
46
13
35
14
30
15
6
16
32
17
33
18
11
19
20
20
13
21
9
22
23
24
25
26
27
28
29
30
14
12
30
56
62
73
54
10
9
Project
Project:
:
Deliverable
:
Student last name:
Project:
Project:
Project:
XmR Chart
Upper control limit for the range:
Upper control limit for the individuals:
Lower control limit for the individuals:
44.913546
64.931264
0.000000
Is there adequate discrimination? Explain your answer: Which
chart did you use and exactly how many strata are there on
Take all results to 6
decimal places.
I utilized the X-Bar Chart, it spans from
0 to 64.931264 (LCL to UCL) it is
If the process is unstable, what process would you follow to determine what is causing the instability?
Define, Measure, Analyze, Improve and Control
Objective:
Earlier, you have made some progress as a result of the stem-and-leaf diagram. The
team
changed the process so that returning patients were processed ahead of the first-time patients.
This dramatically decreased the overall wait times because the returning patients
were
already in the system. The team also learned how to improve the process
through the use of designed experiments. There were other improvements made through the
use of other Six Sigma tools and techniques (aside from your project deliverables) and now the
wait times are acceptable. Now, you want to ensure that they are staying that way and you want
to practice "prevention" versus "detection." Part of your CONTROL strategy is to
employ
the use of an on-going capability study to ensure 'the plates are still spinning'--so-to-speak.
And, the next deliverable will do that, but prior to performing a capability study, one
must make sure the process is in statistical control. This is good, because the team
decided to use a control chart as part of the CONTROL phase anyhow, so this
will
work out fine. In fact, let's do one now…just to make sure we are in statistical
control.
Data:
Wait time (minutes) in order of occurrence
1
10
2
17
3
29
4
39
5
55
6
64
7
28
8
6
9
5
10
3
11
39
12
46
13
35
14
30
15
6
16
32
17
33
18
11
19
20
20
13
21
9
22
23
24
25
26
27
28
29
30
14
12
30
56
62
73
54
10
9
Project
Project:
:
Deliverable
:
Student last name:
Project:
Project:
Project:
XmR Chart
Upper control limit for the range:
Upper control limit for the individuals:
Lower control limit for the individuals:
44.913546
64.931264
0.000000
Is there adequate discrimination? Explain your answer: Which
chart did you use and exactly how many strata are there on
Take all results to 6
decimal places.
I utilized the X-Bar Chart, it spans from
0 to 64.931264 (LCL to UCL) it is
If the process is unstable, what process would you follow to determine what is causing the instability?
Define, Measure, Analyze, Improve and Control
-
Rating:
/5
Solution: Statistics- what process would you follow to determine what is causing the instability