1. Control chart (Ex 5-3) Subgroup No. Measurement Average Range Date
Time X1 X2 X3 X4
X-bar R
Comment 1
12/26
8:50 35 40 32 37 2
11:30 46 36 41 3
1:45 34 4
3:45 69 64 68 59
New, temporary operator 5
4:20 38 44 6
12/27
8:35 42 43 7
9:00 8
9:40 33 9
1:30 48 47 45 10
2:50 11
12/28
8:30 39 12
1:35 13
2:25 14
2:35 15
3:35 50

2. Control chart (Ex 5-3) Subgroup No. Measurement Average Range Date
Time X1 X2 X3 X4
X-bar R
Comment 16
12/29
8:25 33 35 29 39 17
9:25 41 40 34
Damaged oil line 18
11:00 38 44 28 58 19
2:35 37 20
3:15 56 55 45 48
Bad material 21
12/30
9:35 22
10:20 42 23
11:35 36 24
2:00 43 25
4:25

3. Control chart (Ex 5-3)

4. Revised Central Lines

5. Standard Values

6. Figure 5-6 Trial control limits and revised control limits for Xbar and R charts

7. A Framework for Applying the Different Quality Control Tools