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Business Statistics, 3rd Edition
book

Business Statistics, 3rd Edition

by Naval Bajpai
April 2024
Intermediate to advanced content levelIntermediate to advanced
921 pages
37h 16m
English
Pearson India
Content preview from Business Statistics, 3rd Edition
Chapter 17
PB
Statistical Quality Control
727
Cloth lot number Number of defects
12 4
13 3
14 0
15 0
16 4
17 5
18 6
19 3
20 4
21 2
22 3
23 1
24 6
25 5
Solution: Centreline, upper control limit (UCL), and lower control limit (LCL) can be determined
as below:
Centreline (CL) = c =
++++⋅⋅⋅+
=
4 546 5
25
4.2
Upper control limit (UCL) = cc+= =3423 10 3482
..
2.04939
Lower control limit (LCL) = cc−=−× =−3423 1 9481
..
2.04939
Practically, the lower control limit cannot be negative; hence, the lower control limit is taken as
zero. The c chart shown in Figure 17.15 clearly exhibits that all the points are within the control
limits. Hence, it can be said that the process ...
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Publisher Resources

ISBN: 9789390168996