GAQM Certified Lean Six Sigma Black Belt (CLSSBB)

QUESTION NO: 1
A frequent cause of system sub optimization is:

A. optimizing individual processes B. failing to consider the normal distribution C. failing to draw a system flow chart D. using data with outliers

Correct Answer: A

QUESTION NO: 2
When comparing two vendors' machines it is found that a sample of 1000 parts from machine A has 23 defectives and a sample of 1300 parts from machine B has 36 defectives. Do the data indicate that machine B has a higher rate of defectives?

A. no B. yes C. all of the above

Correct Answer: B

QUESTION NO: 3
The number of factors, levels and replications:

A. 3, 3, 3 B. 3, 2, 3 C. 2, 3, 2 D. 2, 2, 2 E. 3, 2, 2 F. none of the above

Correct Answer: B

QUESTION NO: 4
As opposed to earlier emphases lean manufacturing tends to stress:

A. eliminating, simplifying or reducing non-value added activities B. making value added activities more efficient

Correct Answer: A

QUESTION NO: 5
An important step in determining the VOC is:

A. identify the customer B. none of the above C. establish viable or comprehensive process feedback loops D. measure the virtual operating continuum potential E. ascertain the principles that are values of the corporation F. all of the above

Correct Answer: A

QUESTION NO: 6
One characteristic of attributes data is that it is always

A. expensive to collect B. continuous C. read from a scale of measurement D. discrete

Correct Answer: D

QUESTION NO: 7
If the value of the test statistic had been 7.03, what action should have been taken regarding the null hypothesis?

A. accepted B. rejected C. not rejected D. none of the above

Correct Answer: B

QUESTION NO: 8
A set of data from a process has 8 readings per sample and 50 samples. The mean of the 50 sample means is 12.62. The mean of the 50 ranges is 0.18. Find the control limits for the xbar chart.

A. 12.54 and 12.70 B. 12.11 and 13.13 C. 12.55 and 12.69 D. none of the above

Correct Answer: C

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QUESTION NO: 9
A company's accounts payable department is trying to reduce the time between receipt and payment of invoices. If the team has just completed a flowchart of the process and identified the critical steps, which of the following tools should be used next?

A. Histogram B. Box and whisker plot C. Scatter diagram D. Fishbone diagram

Correct Answer: D

QUESTION NO: 10
A project whose definition does not include performance metrics:

A. have a high risk of failure B. will typically be short term C. should not be approved D. use statistical inference E. none of the above

Correct Answer: C

QUESTION NO: 11
The preferred method for determining statistically whether factor A or B is significant requires what additional information?

A. values of responses in replicate runs B. ambient conditions during the experiment C. value of noise factors D. number of repetitions E. blocking pattern

Correct Answer: A

QUESTION NO: 13
TRIZ is an acronym which refers to:

A. a Russian general responsible for creative thinking B. an experiment using transitional results C. an organization of quality professionals D. a set of problem solving tools

Correct Answer: D

QUESTION NO: 14
This table displays the inventory of fasteners in a storage cabinet. A bolt is selected at random from the fastener cabinet. Find the approximate probability it is size 7/8.

A. .08 B. 11 C. .09 D. .30 E. none of the above

Correct Answer: B

GAQM Certified Lean Six Sigma Black Belt (CLSSBB) - CLSSBB Exam Questions