- (Topic 2)
A principle disadvantage of fractional factorial experimental designs is:

1. A. reduced cost
2. B. improved accuracy
3. C. confounding of effects
4. D. higher confidence level
5. E. reduced probability of type II errors

Correct Answer: C

- (Topic 2)
The mean of a Poisson distribution is 2.94. It’s variance is:

1. A. Not enough information is given
2. B. 1.71
3. C. 8.64
4. D. 74.7
5. E. 1.31

Correct Answer: C
The correct answer is C because the mean of poisson distribution is 2.94, hence the variance would be 8.64
U =
variance = 2

- (Topic 2)
A team has completed a brainstorming session that has generated a large number of ideas. The team needs to organize these ideas in natural groupings. Which tool is most appropriate?

1. A. matrix diagram
2. B. cause and effect diagram
3. C. process decision program chart
4. D. affinity diagram
5. E. activity network diagram
6. F. tree diagram
7. G. prioritization matrix
8. H. matrix diagram
9. I. interrelationship digraph

Correct Answer: D

- (Topic 2)
One of the approaches used by TRIZ is referred to as “removing the contradiction.” A project team is asked to determine how many coats of paint should be applied to a panel. In this case the contradiction is:

1. A. additional coats cost money but give a better finish
2. B. the customer wants an excellent finish at a low cost
3. C. the company wants to reduce costs but have an excellent finish

Correct Answer: A

- (Topic 1)
A team is investigating ways to reduce power outages. They determine that an outage can occur in only three ways: grid failure, local transformer failure or local overload. They then investigate each of these three events for possible causes, etc. They draw a diagram that “fans out” using the power outage as the handle of the fan. These improvements are best described by which approach to problem solving?

1. A. Affinity diagram
2. B. Inter-relationship digraph
3. C. Tree diagram
4. D. Process decision program chart
5. E. Matrix diagram
6. F. Prioritization matrix
7. G. Activity network diagram

Correct Answer: C