MBBLSS

Aug 6th, 2013
FratBro23
Category:
Other
Price: $10 USD

Question description

Question 1:What’s the benefit of using a Plackett-Burman screening design over a design RIII?

A

A Plackett-Burman uses a geometric design and can be folded over for sequential experimentation

B

The Plackett-Burman grows in factors of 4 vs. exponentially

C

The Plackett-Burman does not alias the main effects to two-way interactions

D

Both B and C

E

All of the above

Question 2:Quality through inspection has a clearly defined responsibility.

A

True

B

False

Question 3:When designing a screening experiment, what’s the benefit of using a design RIVover a RIII?

A

A design RIVhas main effects aliased with three-way interactions which rarely occur, whereas RIIIhas main effects aliased with two-way interactions which occur frequently

B

You can fold over a design RIVas opposed to a design RIIIthat you can not fold over

C

A design RIVhas fewer runs that a RIII

D

All of the above

Question 4:A mixture design is easily identifiable because

A

All the levels have to sum to the same constant

B

Each factor has a different number of levels

C

The design space creates a polyothogram

D

All of the above

Question 5:What is a blocking factor?

A

A factor not under consideration for the test but must vary and may contribute significantly to the experiment’s variation

B

A factor under consideration for a test but whose variation is considered insignificant

C

A blocking factor is another name for a latent potential variable

D

None of the above

Question 6:Costs incurred when the company finds a defect before shipment are:

A

Prevention costs

B

Appraisal costs

C

Internal failure costs

D

External failure costs

Question 7:The Cost of Quality Report shows:

A

Costs by category for the current and prior periods

B

Percent of change from the prior period

C

Current period budget

D

Percent of change from the budget

E

All of the above

Question 8:If you are conducting a two-level experiment and wish to perform a few runs at the center point to  detect any curvature and obtain your experimental error, what are some of the negatives of using this approach?

A

You do not know which factor, or factors, contribute to the curvature if it exists

B

By using the center points as your experimental error in lieu of a replicate, you will not be able to detect if a factor causes a variance shift

C

By using center points, your design is no longer balanced and it loses its orthogonality

D

All of the above

E

Both A and B

Question 9:The easiest way to handle mixture is to

A

Use the Simplex-Lattice design

B

Use the Simplex-Centroid design

C

Use the standard matrix design

D

Convert them to ratios

 

Question 10:The design portion of your experiment should take about 50% or more of the time.

A

True

B

False

Question 11:What are some of the benefits of using Gray Coding in experiments?

A

It provides an orthogonal design

B

Only one factor changes at a time

C

It randomizes the experiment

D

It reduces the number of runs while keeping the resolution high

Question 12:The new philosophy for quality is:

A

Quality through detection

B

Quality through prevention

C

Quality is management’s responsibility

D

Both b and c

Question 13:One advantage of a Box-Behnken design is

A

It’s an orthogonal design

B

It doesn’t utilize the corner points and has no axials

C

You can use sequential experimentation

D

It’s the most efficient design with a large number of factors

Question 14:If you do not block on a significant factor, what happens to the factor’s effect?

A

Nothing, since it not included in the experiment

B

The effect is spread evenly throughout the design by randomizing the experiment

C

The effect is present in the error term and makes it difficult to detect valid terms in the experiment

D

None of the above

Question 15:Having a good business case with a return on investment and a well-thought-out experimental design  is the best way to gain management support for your experiment.

A

True

B

False


Tutor Answer

(Top Tutor) Daniel C.
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School: Cornell University
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