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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

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