CSSBB Free Practice Test

- (Topic 2)
This QFD matrix was used in the design process for a ball point pen. What symbol is appropriate for the square labeled 9?

A.
B.
C.

1. A. none of the above

Correct Answer: D

- (Topic 2)
The following is a set of individual measurements: 3 5 4 5 6 3 4 3 2 4 5 6 5 7 6 4 5 5 8 7 6 6 7 7 4
Find the control limits for the range chart.

1. A. none and 4.2
2. B. none and 5.1
3. C. 0.2 and 1.5
4. D. none of the above

Correct Answer: A

- (Topic 1)
The following data were collected on the diameters of turned shafts: 2.506 2.508 2.505 2.505. These values are: I. Attribute data II. Discrete data III. Variables data IV. Continuous data

1. A. I and II A stable, normally distributed process with specification 3.50 .03 has = = .016. What percent of the production violates specification?
2. B. I only
3. C. II only
4. D. I and IV
5. E. III and IV

Correct Answer: E

- (Topic 1)
A higher resolution number for an experimental design indicates that:

1. A. results are more clear
2. B. confounding between main effects and interaction effects are less likely to be significant
3. C. a higher number of replications have been used
4. D. all factors have been tested at all levels
5. E. the design is more balanced

Correct Answer: B

- (Topic 1)
Deming called the technique of studying a sample to gain understanding of the distribution of a population an “enumerative study.” His main objection to these studies was:

1. A. they are too difficult to perform correctly
2. B. they require extensive use of computers
3. C. they assume a stable distribution
4. D. random samples are expensive to obtain
5. E. these studies have a high probability of Type II error

Correct Answer: C