Question 1. Half the tolerance is equal to the distance from the target to the upper specification limit.

True

False

Question 2.

2. A change in quality level from 3-sigma to 4-sigma represents

a: 1-fold improvement.

2-fold improvement.

5-fold improvement.

10-fold improvement.

Question 3.

3. As the sample size increases, the standard error of the mean increases, all else being held constant.

True

False

Question 4.

4. In a service context, lean production is referred to as: lean operation. lean enterprise. lean process. lean service.

Question 5.

5. Which phase is the idea-gathering phase of DMAIC? Define Analyze Improve Control

Question 6.

6. A delivery process has a target of 5 hours plus or minus one hour. The process standard deviation is estimated as 0.25 hours. The process has a sigma quality level.
1.25
2
4
8

Question 7.

7. Six Sigma represents a quality level of at most:
1.5 defects per million opportunities.
2.0 defects per million opportunities.
3.4 defects per million opportunities.
4.5 defects per million opportunities.

Question 8.

8. When interactions are present in an experiment, main e?ects have little meaning.
True False

Question 9.
9. Collecting, organizing, summarizing, and presenting data is referred to as statistical inference. (Points : 1)

True False

Question 10.

10. A mathematical function that assigns numerical values to every possible outcome in a sample space is called a _____.

probability function

population constant

sample variable

random variable

REFERENCE:

Evans, J., & Lindsay, W. (2011). Managing for quality and performance excellence (8th ed.).

Mason, OH

Statistical Thinking and Application - Six Sigma and Process Improvement