50 Questions

Questions and Answers

- 1.
- A.
A management methodology that uses only statistical tools to improve customer experience.

- B.
A customer-focused problem-solving methodology that uses powerful statistical tools to reduce variation and improve processes.

- C.
A management methodology that is primarily focused on achieving financial results.

- D.
A customer-focused problem-solving methodology used exclusively within the manufacturing sector.

- 2.Which Role is
*not*traditionally performed by a Green Belt?- A.
Data Gathering

- B.
Analysis

- C.
Lead Small Projects.

- D.
Coach and mentor other Six Sigma Practitioners.

- 3.
- A.
2, 5, 1, 4, 3

- B.
1, 2, 5, 4, 3

- C.
3, 2, 1, 5, 1

- D.
2, 1, 5, 4, 3

- 4.
- A.
We can expect 3.2 defects per million opportunities.

- B.
It has a yield of 99.997%

- C.
We can expect 3.4 defects per million opportunities.

- D.
It has a yield of 99.9967%

- 5.
- A.
5 to 15

- B.
4 to 16

- C.
2 to 8

- D.
6 to 14

- 6.
- A.
Bell-shaped, a variance of 1, the mean=median=mode.

- B.
Bell-shaped, symmetrical about the mean, a single mode.

- C.
Un-Symmetrical about the mean, a natural tolerance of three standard deviations, unimodal.

- D.
Symmetrical about the mean, bell-shaped, discrete data.

- 7.A shape referred to as Platykurtic is:
- A.
Flatter than the Normal Distribution.

- B.
Narrower than a Normal Distribution.

- C.
Same as a Normal Distribuiton.

- D.
None of the above answers.

- 8.A process is in-control and stable. Describe the type of variation that exists in the process.
- A.
Special Cause variation.

- B.
Natural Variation.

- C.
Out-the-ordinary varation.

- D.
Non-random variation.

- 9.
- A.
1,3,4,5

- B.
1,2,4

- C.
1,2,4,5

- D.
1,4,5

- 10.Indicate which control char(s) is the most sensitive for measuring time as data:
- A.
Np chart.

- B.
X bar R Chart.

- C.
P Chart.

- D.
Individuals and Moving Range.

- 11.Which one of the characteristics below does not reflect common cause variation:
- A.
Trend

- B.
In-Control

- C.
Predictable

- D.
Stable

- 12.
- A.
Do nothing.

- B.
Continue taking data measurements to confirm your belief.

- C.
Stop and identify the Special Causes.

- D.
Stop, identify the special Causes and eliminate them.

- 13.
- A.
The process is in-control (within the UCL and LCL).

- B.
The process appears to be too table and should be questioned.

- C.
The process needs to be checked for special causes.

- D.
The wrong control chart has been selected.

- 14.The number of data points for a sample is 100. Indicate the approximate number of classes one needs to use for grouped data?
- A.
10

- B.
5

- C.
20

- D.
100

- 15.If the salary of professionals is inversely proportional to their age, it indicates ___________ relationship between the two variables?
- A.
Positive

- B.
Negative

- C.
No Correlation

- D.
Linear

- 16.
- A.
4,4,5

- B.
3,5,4

- C.
4,3,5

- D.
4,5,5

- 17.
- A.
2.18,6

- B.
2.5,6

- C.
3.18,6

- D.
6,2.18

- 18.
- A.
The process is capable.

- B.
The process is capable but not centered.

- C.
The process is highly capable and centered.

- D.
The process is not capable.

- 19.A process you are monitoring produces 150,000 customer transactions per year. Your analysis indicates the percent non-conforming is 0.2%. What is the DPMO?
- A.
300

- B.
1,800

- C.
2,000

- D.
20,000

- 20.Using the same information from question 19, what is the number of defective transactions?
- A.
300

- B.
1,800

- C.
2,000

- D.
20,400

- 21.
- A.
Consult with your legal department.

- B.
Develop the appropriate control chart.

- C.
It is still a normal distribution.

- D.
Stop the process and bring it back into control.

- 22.
- A.
X Bar and R Chart.

- B.
X Bar and the Standard Deviation Chart.

- C.
X Bar and the Variance Chart.

- D.
X Bar and the Mean Chart.

- 23.An attribute chart can be represented by all of the following EXCEPT:
- A.
P Chart

- B.
R Chart

- C.
NP Chart

- D.
C Chart

- 24.
- A.
5,2,3,4,1

- B.
2,5,3,4,1

- C.
1,2,5,3,4

- D.
5,1,2,4,3

- 25.Select the key attributes of successful Six Sigma programs.
*1)**Senior management commitment 2) High ROI projects 3) Projects with short durations 4) Proper funding 5) Well-trained staff 6) Properly scoped projects*- A.
1,3,5,6

- B.
1,4,5,6

- C.
1,5,6

- D.
1,2,4,5,6

- 26.These provide support, resources and remove roadblocks. They have more in-depth understanding of the methods - measurements and interpretations of process measurements. They are referred to as:
- A.
Champions

- B.
Master Black Belts

- C.
Steering Committee

- D.
Process Owners

- 27.
- A.
X bar R Control Chart

- B.
Pareto Chart

- C.
Histogram

- D.
Cumulative Frequency Graph

- 28.What are the 3 key attributes of Six Sigma that best summarize why it is a compelling methodology for reducing variation and improving processes in the mind of Senior Management?
- A.
Data Driven, Creative, Streamlined

- B.
Customer Focused, Data Driven, ROI Oriented

- C.
Customer Focused, Statistical Emphasis, Conformity - Driven

- D.
Data Driven, Methodical, ROI Oriented

- 29.A company using Six Sigma methodology is operating at a 99.99967% defect-free rate. What is its Sigma Level and failure rate?
- A.
3 Sigma, 3.4 DPMO

- B.
4.5 Sigma, 233 DPMO

- C.
5.0 Sigma, 233 DPMO

- D.
6 Sigma, 3.4 DPMO

- 30.
- A.
Control Charts, Pareto Charts, Fish-Bone Diagrams

- B.
Pareto Charts, Capability Indices, Control Charts

- C.
Pareto Charts, Fish-Bone Diagrams, Scatter Plot Diagrams

- D.
Scatter Plot Diagrams, Pareto Charts, Correlation

- 31.List the 3 key activities - in correct order - for determining if a proceess is normally distributed, in-control and capable of consistently meeting customer requirements.
- A.
Construct a histogram, Prepare Control Charts, Calculate Capability Indices

- B.
Construct a SIPOC, Prepare Control Charts, Calculate Cp and Cpk.

- C.
Calculate the 3 measures of Central Tendency, Calculate Capability Indices, Prepare Control Charts

- D.
Prepare CTQs, Construct Control Charts, Calculate Capability Indices

- 32.The average time spent waiting in queue for a bank teller is 8 minutes. The Standard Deviation is 30 seconds. What is the tolerance of the process that exhibits the limits of normal variation?
- A.
6 to 10 minutes

- B.
7 to 9 minutes

- C.
6.5 minutes to 9.5 minutes

- D.
3 minutes to 12 minutes

- 33.The X Bar R Chart uses two control charts to monitor a process. What are they?
- A.
Mean and Standard Deviation

- B.
Mean and Range

- C.
Mean and Variance

- D.
Grand Average and Variance

- 34.Select the correct mean, median and mode for the following sample: 5,3,3,6,3,4,10.
- A.
4.86,4,3

- B.
4.86,3,4.5

- C.
5,3,4.5

- D.
4.86,3,4

- 35.What is the range and standard deviation for the above sample?
- A.
7,2.54

- B.
2.54,7

- C.
4.86,3

- D.
5,2.54

- 36.A process has the following X values (1,2,3,4,5) and Y values (2,4,6,8,10). What is the relationship between the two variables?
- A.
Linear

- B.
Negative

- C.
Positive and Linear

- D.
No Correlation

- 37.
- A.
1,000,000

- B.
84,000

- C.
144,000

- D.
576,000

- 38.If the company is operating at 3 Sigma in the above example what is the percent conformance?
- A.
99.73%

- B.
99.97%

- C.
99.997%

- D.
68.26%

- 39.A process has a CP = 1 nd a Cpk = 1. Interpret these capability indices:
- A.
The process is centered but not capable

- B.
The process is not in control

- C.
The process is not capable

- D.
The Process is centered and capable

- 40.
- A.
There is no difference between the terms; both are used to indicate if a process is in control

- B.
Control Limits are set by the customers; Specification Limits are derived by the process

- C.
Control Limits are derived by the process; Specification Limits are set by the customer

- D.
Control Limits are typically 3 standard deviations from the mean; Specification Limits are typically 3 standard deviations from the target

- 41.A process is out-of-control. Describe the type of variation that exists in the process.
- A.
Random Variation

- B.
Special Cause Variation

- C.
Common Cause Variation

- D.
Inherent Variation

- 42.
- A.
Take immediate action to identify root causes of the common cause variation

- B.
Increase the specification limits to ensure the process is capable

- C.
Continually and gradually improve the stable process

- D.
Stop the process, identify the causes, and eliminate them

- 43.You are monitoring a process and evidence of trending in the control chart. What is the most likely issue going on?
- A.
New operators

- B.
Different shifts

- C.
Changes in materials

- D.
Wear of machinery

- 44.Which item below most naturally follows the development of a SIPOC diagram?
- A.
A Process Map

- B.
Voice of the Customer

- C.
Critical-to-Quality Requirements

- D.
Project Charter

- 45.The Variance for an equipment installation is 36 square minutes. What is the Standard Deviation?
- A.
72 minutes

- B.
18 minutes

- C.
6 minutes

- D.
Need to know the mean to compute

- 46.
- A.
As one variable changes, one cannot predict a value for the other variable

- B.
As one variable increases, the other variable decreases

- C.
As one variable decreases, the other variable decreases

- D.
As one variable decreases, the other variable increases

- 47.The term Design of Experiments was coined by:
- A.
Taguchi

- B.
Deming

- C.
Feigenbaum

- D.
Crosby

- 48.If the number of data points given is 121, the number of class intervals for constructing a HIstogram would be calculated as:
- A.
10

- B.
20

- C.
11

- D.
12

- 49.
- A.
.0913%

- B.
.00913%

- C.
.0781%

- D.
.00781%

- 50.Collecting the customer needs and converting them to rquirements is referred to as:
- A.
Voice of the Process

- B.
Voice of the Customer

- C.
Requirements Manipulation

- D.
QFC