Course Project Tutorial

Week 7 Course ProjectPart-2 Tutorial

Note: This is a sample outline of how to proceed with this case. The data here IS NOT the same as the data in your case. DO NOT USE THIS DATA in your case. This tutorial uses the template provide in the case. Most find using this template makes the completion of this case much easier.

Scenario/Summary

1. A transmission manufacturing company has been having process difficulties at one its assembly stations. Thirty samples of 4 gears (n=4) have been selected from the process and are provided below.

Observations
Sample
1
2
3
4
1 4.92
4.26
4.94
4.29
2 4.65
5.54
5
5.42
3 5.77
5.26
4.76
4.79
4 6.25
4.88
5.66
4.44
5 5.27
5.41
6.02
4.91
6 5.22
5.38
5.08
4.65
7 5.47
4.68
4.56
4.7
8 5.71
4.54
4.17
4.87
9 5.24
5.58
4.72
5.41
10 4.42
5.18
4.79
4.73
11 5.14
4.26
4.71
5.48
12 4.92
5.78
5.5
5.05
13 5.79
3.83
4.3
4.78
14 4.92
4.8
4.75
5.59
15 5.68
5.74
4.65
5.2
16 5.43
4.81
5.27
4.96
17 4.79
6.04
4.47
5.18
18 4.43
5.08
4.69
6.43
19 5.35
5.95
5.29
5.89
20 5.03
4.66
5.25
4.46
21 5.32
5.09
5.57
5.91
22 4.3
4.47
3.27
4.34
23 6.07
4.97
5.51
5.02
24 5.11
4.9
5.91
4.66
25 4.5
5.24
4.86
4.35
26 4.91
4.79
5.74
5.03
27 4.65
4.71
4.81
5.32
28 4.7
5.5
6.04
4.3
29 5.87
5.3
5.78
5.07
30 4.41
4.75
4.95
5.11

2. Calculate X-Bar-Bar, R-Bar, and associated control limits using the data in the table above.
3. Create X-Bar•R (Average & Range) Control Charts from the data in table above.
4. Discuss notable out-of-control conditions displayed in the completed X-Bar•R (Average & Range) Control Charts. Only consider points outside the Control Limits. Do not consider runs, set of points within certain zones, etc.
5. If the conditions you note could be defined as assignable conditions and they are