Determine the trial limits and revised control limits for a u-chart using the data in the table for the surface finish of rolls of white paper. Assume any out-of-control points have assignable causes.
|
Lot
Number
|
Sample
Size
|
Total Noncon-formities
|
Lot
Number
|
Sample
Size
|
Total Noncon-formities
|
|
1
2
3
4
5
6
7
8
9
10
11
12
13
14
|
10
10
10
9
10
10
10
8
8
8
12
12
12
10
|
45
51
36
48
42
5
33
27
31
22
25
35
32
43
|
15
16
17
18
19
20
21.
22
23
24
25
26
27
28
|
10
11
10
10
10
10
10
10
11
10
10
10
9
10
|
48
35
39
29
37
33
15
33
27
23
25
41
37
28
|
In both cases assume 3s limit.