Quality Question Bank
for Exam preparation

Q2. Which of the following is the key benefit of multi-vari charting?

1. It keeps track of the time when measurements were made
2. It graphically displays the variation in a process
3. It assists in the breakdown of components of variation
4. It is much easier to plot than most control charts

Q3. Effective quality improvement can be instrumental in:

1. Increasing productivity
2. Reducing cost
3. Both a and b
4. None of the above

Q4. Consider that for a process s bar (average standard deviation of 50 samples each of size 4) is found to be 10.04. The value of c4 (corresponding to sample size of .4) is .92. What is the estimated value of process standard deviation?

1. 10.91 (s bar/ c4 is an unbiased estimator of standard deviation)
2. 11.89
3. 12.67
4. 9.67

Q5. The cost of quality has been argued as being primarily driven by the workers. When items were produced that did not meet the customers' expectations, the workers were "found" to be at fault. Current thinking is that management has at least ______________ percent of the responsibility for the cost of quality.

1. 85
2. 75
3. 65
4. 55
5. 50

Q6. When data is plotted on the control charts, the data is of two types: R and -bar. The R data represent points of a ______________ while the X-bar data represent points of a(n) ______________.

1. real sample; simulated sample
2. 100 percent sampling; 10 percent sampling
3. sampling run; average of several runs
4. random sampling; continuous sampling
5. random sample; cross-matrix sample

Q7. The value of Var(3 - 4X) is:

1. 5120 / 9
2. 1280 / 81
3. 5120 / 81
4. 1280 / 9

Q8. Given L=3 and p=.03, estimate the sample size that can be used for construction of a p chart.

1. 534
2. 321
3. 123
4. 291 ((1-p)*L2/p gives us an estimate of sample size)

Q9. production issues should be addressed early

1. correct
2. correct to some extent
3. correct to great extent
4. incorrect

Q10. "The degree to which a set of inherent characteristics of an object fulfils requirements" is known as:

1. Conformity
2. Quality
3. Grade
4. Capability
5. None of the above