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Chapter 09 - Quality Control and Improvement
28. If the population of items produced does not meet or exceed the upper and low
specification limits (all items produced are well within specification limits), the process
capability index, Cp, will be
29. __________ are ideal for monitoring continuous data.
30. Range charts are used to evaluate
Chapter 09 - Quality Control and Improvement
36. Put the following statements in the correct order:
(1) Decide who should do the inspection.
(2) Decide on the type of measurement.
(3) Decide on the amount of inspection.
(4) Decide on the critical points requiring inspection.
37. Which of the following statements is NOT correct?
38. Which of the following is the best description of variables data?
9-15
39. Consider the following statements:
(1) The primary focus of lean is to reduce waste.
(2) The primary focus of six sigma is to reduce defects.
40. The work of 20 claims processors is sampled and examined for errors. 100 claims are
randomly pulled for each processor with the results shown below. What is the upper limit of
the control chart?
Sample # Errors Sample # Errors
1 6 11 6
2 5 12 1
3 0 13 8
4 1 14 7
5 4 15 5
6 2 16 4
7 5 17 11
8 3 18 3
9 3 19 0
10 2 20 4
Total errors: 80
Chapter 09 - Quality Control and Improvement
9-16
41. Which of the following makes the most sense, given today’s view of quality control?
42. Which statement best represents the key assumption(s) of process control?
43. Which of the following statements is true?
Chapter 09 - Quality Control and Improvement
9-17
**Note: The following problem, #44, requires supplying a listing of control chart constants,
such as the one provided in Table 9.1. Properly using the control chart constants is part of
the problem.
44. A brewer bottles beer labeled “net weight 12 ounces.” A production employee pulled 20
random samples of 5 bottles each throughout the day and found that the average weight is
exactly 12 ounces and the average range of the samples is 0.25 ounce. What is the lower
control limit for the averages chart for this process?
45. Which of the following statements is NOT correct?
