Troy University Frito Lay Statistical Process Control Project Report This is where you submit the Excel document containing your work on the SPC project. A
Troy University Frito Lay Statistical Process Control Project Report This is where you submit the Excel document containing your work on the SPC project. All answers should be recorded in the Excel document. Statistical Process Control Project (Frito-Lay)
x1
x2
Sample 1
1.98
2.11
Sample 2
1.99
2.00
Sample 3
2.20
2.10
Sample 4
2.18
2.01
Sample 5
2.01
2.08
x3
2.15
2.08
2.20
2.23
2.14
x4
2.06
1.99
2.05
1.98
2.16
?X
Current Set Limits
UCL
2.22
New Process Limits
UCL
Current Set Limits
LCL
1.98
New Process Limits
LCL
Stensil Fertilizer and Chemical Company SPC Case
Stensil Fertilizer and Chemical Company produces both organic and inorganic fertilizers. Organic fertilizers are generally safe,
presence of hazardous waste materials (hazmat). Most bags contain some hazardous content, but theoretically there should
The quality control department at Stensil feels that there is no problem with hazardous material content, which has been ave
substantial investment would be required to lower the amount of this contaminant. These two departments, after consulting
chart be set up to monitor hazmat content. Five samples will be tested per day and plotted as one point on the chart. Use the
place for this process, use Table 2 to determine whether or not the process remains in control for the week of September 6
Table 1
Date
August
September
2
3
4
5
6
9
10
11
12
13
16
17
18
19
20
23
24
25
26
27
30
31
1
2
3
1
57
56
40
52
57
62
40
64
58
60
52
55
47
50
51
51
45
50
55
49
59
36
50
44
70
2
54
54
70
58
42
49
39
50
53
50
47
40
48
50
50
50
47
35
70
38
62
33
67
52
45
Samples
3
62
47
58
40
52
42
49
42
52
41
48
56
50
49
51
49
70
48
50
64
40
49
53
46
50
4
45
42
45
52
58
33
59
57
48
41
58
49
50
51
51
50
46
39
30
36
54
48
43
47
47
5
36
62
44
46
59
55
48
50
50
50
40
45
48
51
62
50
36
47
51
47
64
56
40
44
41
?X
50.8
52.2
51.4
49.6
53.6
48.2
47
52.6
52.2
48.4
49
49
48.6
50.2
53
50
48.8
43.8
51.2
46.8
55.8
44.4
50.6
46.6
50.6
R
26
20
30
18
17
29
20
22
10
19
18
16
3
2
12
2
34
15
40
28
24
23
27
8
29
nic fertilizers are generally safe, but inorganic fertilizers are carefully monitored by the EPA due to the
t, but theoretically there should be none. The EPA allowable specification is 90 parts per million (PPM).
rial content, which has been averaging just over 50 PPM. The production department estimates that a
o departments, after consulting with the marketing department and the EPA, suggest that a control
one point on the chart. Use the data in Table 1 to set up the control limits. Then, after the limits are in
l for the week of September 610.
Table 2
Date
September
6
7
8
9
10
1
63
57
45
48
45
2
49
70
38
52
53
Samples
3
50
45
46
39
48
4
45
52
54
57
46
5
53
61
52
61
66
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