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Total Quality Management Practice Test: Control Charts & Process Capability
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Control charts are graphs that study how a process changes over time. They are also known as Shewhart charts or Statistical Process Control Charts (SPCC).  Control charts have a central line for the average, an upper line for the upper control limit, and a lower line for the lower control limit. These lines are determined from historical data.  Process capability is a quality control measure that determines if a process can meet customer requirements and expectations. It is a quantifiable comparison of the Voice of the Customer (specs, requirements, or expectations of your customer) and the... Show more
Total Quality Management Practice Test: Control Charts & Process Capability
Time left 00:00
25 Questions

1. Specification limits are also known as ________ of the product.
2. Discrete data is also known as ________
3. When the subgroup size varies from one sample to another, U-chart is used.
4. Sampling can be used when it is impossible to measure the entire population.
5. The control chart for defects is called as _______
6. The data set for measuring length of an object which is 50 cm includes five readings which are 40 cm, 40 cm, 41 cm, 40.5 cm, and 41 cm. What can be the conclusion made by this study?
7. The upper specification limit of a product is 20.05 mm and the lower specification limit of the same product is 19.95 mm. The standard deviation is 0.25 mm. What is the value of the process capability index Cp?
8. ‘Assignment causes of variation’ of any manufacturing process are also known as _______
9. The Gaussian curve is also known as ______
10. Number of scrap items in a factory is _______
11. Which of the following is not a measure of dispersion?
12. ‘Random causes of variations’ in any manufacturing process are inevitable.
13. The control chart that measures the number of non-conformities is ____ and the one that measures the number of non-conformities per unit is ______
14. The peak of a curve is located at (4,4). Four students located the peak of the curve to be at (3,4), (5,4), (4,3), and (4,5). What can be the conclusion made by this study?
15. Which of the following is not a factor that affects the occurrence of ‘random causes of variation’ in any manufacturing process?
16. The data set for measuring height of an object which is 80 cm includes five readings which are 40.5 cm, 81 cm, 72 cm, 48 cm, 50 cm. What can be the conclusion made by this study?
17. The subset of a population is known as ________
18. Given for an asymmetrical distribution, median=20, mean=22, what is the mode?
19. If the coefficient of variation of a data set A is 40 and for data set B it is 60, which data set is more consistent?
20. If the diameter of a shaft is measured as 60 mm, 62 mm, 63 mm, 61 mm, 60 mm. What is the mean diameter that can be considered for calculation?
21. What is the interpretation of Cpk=Cp?
22. In the jargon of statistical process control, USL and LSL are known as _______ and _____ respectively.
23. The control chart that determines the fraction of rejected parts as non-conforming is ______
24. If the diameter of a shaft is measured as 80 mm, 81 mm, 82 mm, 83 mm, 84 mm. What is the median of the observed values?
25. Which of the following is not a type of sampling technique?

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