QOM 2017 - Six Sigma - Test 2015A Flashcards
Which of the following statement is correct concerning pvalue?
a) It is the probability of the null hypothesis being true
b) It is the probability of the alternative hypothesis being
true
c) It is the probability of the null hypothesis being true
given the observed data
d) It is the probability of the observed data given that the
null hypothesis is true
d) It is the probability of the observed data given that the
null hypothesis is true
Suppose you want to estimate the mean value of a process
(H_0:mean=50ml). A sample size of n is drawn randomly
from the process and a confidence interval of 95% is
constructed thereof. The lower limit of the confidence
interval is 48ml and the upper limit is 52ml. Which of the
following statement is correct?
a) There is 95% probability that the true mean of the
process lies between 48ml and 52ml
b) Since the confidence interval includes the value in the H0 (50ml), it means that the H0 is proven to be true
(the mean value of the process is 50ml)
c) If the sampling is repeated using the same procedure
for many times, 95% of the confidence intervals will
include the value in the H0 (50ml).
d) If the sampling is repeated using the same procedure
for many times, 95% of the confidence intervals will
include the true mean value
e) All of the above
d) If the sampling is repeated using the same procedure
for many times, 95% of the confidence intervals will
include the true mean value
You are monitoring a CTQ of products produced with control
charts. Your control chart is showing instability in one point.
What does it imply in terms of process development?
a) One has to scrap the part outside the control limits
b) One has to compare the outcome with the Voice of the Customer
c) One has to identify the causes of common variation
d) One has to identify the causes of instability
d) One has to identify the causes of instability
What does a Kappa-value of zero mean?
a) Raters contradict each other
b) Raters are no better than chance
c) The number of categories are few
d) Rating categories are too wide
b) Raters are no better than chance
You have performed an attribute agreement analysis of a visual inspection. You found out that it was low agreement
between the raters. What would you think of the
measurement system?
a) The standard probably needs to be improved
b) The raters might need more training
c) It would be a good idea to check whether anyone
needs glasses
d) All of the above
d) All of the above
In order for a problem to be solved correctly, which of the
following must occur first?
a) The measurement system must be validated
b) The process must be mapped
c) The problem must be defined
d) Relevant data must be gathered
c) The problem must be defined
Doing VA/NVA analysis in a VSM has the objectives below,
one is unfortunately wrong. Which one?
a) Identify and eliminate the hidden costs that do not add
value for the customer
b) Reduce unnecessary process complexity
c) Reduce process steps cycle time
d) Reduce process lead time
c) Reduce process steps cycle time
In data analysis, the difference between population and
sample is:
a) The population is the collection of objects of our
interest, the sample is a limited subset of it
b) The population refers to human beings, the sample
refer to objects
c) The population allows inference, the sample does not
d) The population is better defined than the sample
a) The population is the collection of objects of our
interest, the sample is a limited subset of it
The basic issue when addressing the accuracy of a
measurement system (MS) is to
a) reduce bias relative to a reference
b) determine if the MS can distinguish the contrast of
interest (have required resolution)
c) to separate lack of reproducibility from lack of
repeatability
d) to determine total Gauge R&R variability as % of
Tolerance
a) reduce bias relative to a reference
In Effective Scoping Practice one important purpose is to
early address the relationship between small (y) and big
(Y), i.e. y Y. What does that mean?
a) To define baseline of the problem
b) To determine if the data collected has the resolution
required
c) To match the target measure with the customer
expectation
d) All of the above
c) To match the target measure with the customer
expectation
Which of the tools or methodologies listed below is NOT
used in the practices of sustainability, namely Reduce,
Reuse and Recycle?
a) Design for Remanufacture
b) Design for Disassembly
c) Design for Six Sigma
d) Eco-Design
c) Design for Six Sigma
In the article An Application of Six Sigma to Reduce Waste
by Banuelas et al. (2005), which of these two tools were
used in the Project Selection phase?
a) Cause and Effect Matrix & Pareto Chart
b) SIPOC & Pareto Chart
c) AIM Exercise & Cause and Effect Matrix
d) Design of Experiment & Pareto Chart
a) Cause and Effect Matrix & Pareto Chart
VSM is a tool that helps to visualize and understand the flow
of material and information as a product makes its way
through the value stream. Which one of the following is NOT
regarded as a step in performing VSM?
a) Walk the process backwards
b) Create and implement a new material flow
c) Add physical and information flows in parallel
d) Ask a set of key questions
b) Create and implement a new material flow
