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LSSGB Test 1: Questions & Accurate Solutions
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LSSGB Test 1: Questions & Accurate Solutions
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LSSGB Test 1: Questions & Accurate SolutionsIncreasing the performance in a Six Sigma organization from 3 sigma to 4
sigma would reduce the defects per million opportunities by a factor of...
Right Ans - 10 (rounded). The 4 sigma defect rate is 6210 ppm and the 3
sigma defect rate is 66807 ppm or a ratio of 1:10.76.
What is the inference of "Process is in control" according to Walter Shewhart?
Right Ans - Process has chance causes - The only time the process is said to be
in control is when the common causes of variation contribute to the variability
of the process. Option c is the correct answer.
One of the uses of recording check sheets is: Right Ans - Collecting tally
counts of attribute data
If P(A) is 0.6, P(B) is 0.5, Probability of either event happening together is
0.85, what is the probability of both the events occurring? Right Ans - P(A)
+ P(B)- P(A&B) = 0.6+0.5-0.85 = 0.25.
A team project charter is essential for all of the following reasons, EXCEPT:
a. It ensures the team champion will be supportive
b. It guides the team to focus on the appropriate problem
c. It leads to a solution that aligns with the organization's goals
d. It provides a complete history of the project Right Ans - The project
charter will be the initial starting point of a project and does not provide its
total history.
The advantage of using the modern designed method of experimentation,
rather than the classical OFAT is that: Right Ans - Fewer terms and
measurements are needed for valid and useful information.
The key to this question is the meaning of the word "classical." To most
authors, this term refers to varying one factor at a time while holding all other
factors constant. Although this approach may work for very simple problems,
it causes havoc with moderately complex systems. The fixed factors do vary,
which can waste time, effort, and money. This traditional approach can yield
invalid or inconclusive results. Modern design experimentation (including
fractional factorials, improved three factor designs, and Latin square logic)
squeeze a large amount of valid information from a few trials.
, Which tool would be appropriate to collect the data to study the symptoms of
a problem? Right Ans - Check sheet - This ensures that all the required data
has been identified and validated.
The probability of a train arriving on time and leaving on time is 0.8. The
probability of the same train arriving on time is 0.84. The probability of this
train leaving on time is 0.86. Given the train arrived on time, what is the
probability it will leave on time? Right Ans - The solution to this problem
involves conditional probability. The probability of event B occurring, given
event A has occurred, is:
Let event B be the probability the train leaves on time;
let event A be the probability of the train arriving on time.
The intersection of events A and B is the probability of the train arriving and
leaving on time. Thus, the probability of event B given event A has occurred is
0.8/0.84 = 0.9524.
Whare the advantages/disadvantages of control charts? Right Ans -
(disadvantage) The disadvantage is that they can be difficult to interpret
properly
(Advantages) The advantages of control charts include their ability to detect
trends of statistical significance, provide an ongoing measure of process
capability, and detect special causes of variation
In Six Sigma applications, Standard Deviation is referred to as difference from
the: Right Ans - Standard deviation is always referred to as difference from
the mean.
Quality Tools (Charts and Diagrams) Right Ans - Flow charts visually
present a process showing the main steps, branches, and outcomes of that
process.
A scatter diagram visually displays the correlation between two or more
variables.
Control charts are used to detect changes in a predictable process and indicate
when adjustment is necessary.
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