Improve Quiz

Question 1

The purpose of a designed experiment is to
A. Identify factors affecting process performance
B. Discover settings for factors that produce optimal performance
C. Reduce or control the variation on a product or process
D. All of the above

Answer 1

D. All of the above

Question 2

When performing a DOE “interaction” is:
A. When a response is tied directly to one factor
B. When it is difficult to determine the effects of 2 or more factors
C. When a response is tied to the settings of more than one factor
D. None of the above

Answer 2

C. When a response is tied to the settings of more than one factor

Question 3

Using Yates Standard Order for 2^4 experiment, what would the factor levels be for run #5? 
A. + + - - 
B. - - + -  
C. - - - +
D. + - + +

Answer 3

B. - - + -

Question 4

A full factorial experiment is designed with three factors at two levels. How many runs are required? 
A. 4 
B. 6
C. 8 
D. 12

Answer 4

C. 8

Question 5

Which of these is true about validating the results of a DOE?
A. It is necessary to validate the results by replicating the best combination of effects and interactions
B. It is not necessary since the changes made from the DOE will confirm the improvement
C. It is only necessary to validate results when the DOE is a fractional factorial
D. It is only necessary to validate the results when there is confounding interactions.

Answer 5

A. It is necessary to validate the results by replicating the best combination of effects and interactions

Question 6

You have built a predictive model of the experimental data. The difference between the actual response data and the model data are termed:
A. Residuals 
B. Confounding 
C. Differential Data 
D. Transitional Data

Answer 6

A. Residuals

Question 7

If you were running an experiment with 8 factors, which of the following would be most economical?
A. Full Factorial
B. Fractional Factorial
C. Full Factorial followed by a Fractional Factorial
D. Full Factorial with replication

Answer 7

B. Fractional Factorial

Question 8

If confounding occurs in a three factor experiment (A, B, and C) conducted at two levels, one would expect that factor A would be confounded with: 
A. Factor B 
B. Factor C 
C. The BC interaction 
D. Either the AB or the AC interaction

Answer 8

C. The BC interaction

Question 9

The calculation of experimental error is a fundamental analysis for determining the statistical significance of DOE factors. Which of the following allows for the determination of experimental factors? 
A. Blocking 
B. Factors
C. Treatment 
D. Runs

Answer 9

A. Blocking

Question 10

A matrix of experimental factors is called: 
A. An experimental chart 
B. An experimental array 
C. A cause and effect chart 
D. An ANOVA

Answer 10

B. An experimental array

Question 11

When performing a DOE, the term “Main Effect” is:
A. The effect on response of changing one factor from level 1 to level 2
B. The effect on response of changing multiple factors
C. The effect on the response when interactions exist
D. The effect on the response when blocking occurs.

Answer 11

A. The effect on response of changing one factor from level 1 to level 2

Question 12

During the Improve phase of Six Sigma DMAIC, we:
A. Used advanced experimental techniques to optimize key input variables
B. Develop potential solutions
C. Validate potential improvements with pilot studies.
D. All of the above

Answer 12

D. All of the above