Green Belt Exam Questions And
Correct Answers/ Full Solutions
What is the Mean, Mode & Median for the data in Column 1, Data Set A?
a. Mean = 8.7, Mode = 8, Median = 7
b. Mean = 8.7, Mode = 7, Median = 8
c. Mean = 8, Mode = 8.7, Median = 7
d. Mean = 7, Mode = 7, Median = 8.7
e. Mean = 8, Mode = 8, Median = 7 - CORRECT ANSWER- Answer B
Formula:
Mean = Sum(x)/n = 8.7
Mode = Most frequent value = 7
Median = because sample is even (n=50), the median is the average of the (n/2)th and ((n/2)+1)th values
in the sorted series = 8
Please reference Quantifying Process Variability for more information.
A call center was experiencing customer complaints about time-on-hold and an improvement team was
formed to solve the problem. The manager of the call center joined the team's first meeting and
informed the team that their project would be short-lived because the obvious solution to the time-on-
hold problem was to add more phone lines. With this advice as a basis, the team crafted a problem
statement: "Additional phone lines are needed in order to reduce the average customer time-on-hold
from 6.2 minutes to our target of 45 seconds".
Which of the following best describes the problem statement?
a. The statement is too broad to be useful in the particular situation.
b. The statement contains a solution.
,c. The statement is not related to the problem described above.
d. This is a good problem statement.
e. The statement does not fully define "time-on-hold". - CORRECT ANSWER- Answer B
The problem statement dictates that the solution is "additional phone lines". Please reference Project
Charter for more information.
What will a stakeholder analysis (RACI matrix) help the team do?
a. Narrow the project scope.
b. Reduce the likelihood of project roadblocks.
c. Choose effective team members.
d. Develop a focused problem statement.
e. Choose the most optimal project to pursue. - CORRECT ANSWER- Answer B
A stakeholder analysis is used to 1) identify those entities that will have influence on the project, 2)
identify the type of influence and 3) develop strategies to realize the positive influences and reduce any
roadblocks due to the negative influences. Please reference Stakeholder Analysis - RACI Matrix for more
information.
When analyzing a process, which of the following terms represents the inputs?
a. f(X)
b. X
c. Y
d. Result
e. Cost - CORRECT ANSWER- Answer B
f(X) is the Transfer Function; Y is the process output, also sometimes referred to as the Result; Cost
could be either an input or output. Please reference Input Determines Output for more information.
, The fishbone diagram is used for which of the following?
a. To follow the movement of people in a process
b. To determine process capability
c. To categorize input variables that may be important
d. To prioritize the highest frequency problems
e. To show the process flow - CORRECT ANSWER- Answer C
Please reference Cause & Effect Diagram Toolset for more information.
What is missing from the following Project Charter Business Case statement: "Process Cycle Time must
be reduced in order to meet customer requirements" ?
a. Team leader
b. Scope of project, including "included" and "not included"
c. Amount of improvement required and business impact
d. Measurement system to be used
e. Resources required - CORRECT ANSWER- Answer C
The business case should state the level of improvement required, otherwise, there will be no may to
measure success. In addition, the economic impact should be included so that it is clear why this project
is a priority vs. something else.
Please reference Project Charter Toolset for more information.
Which of the following is a use for a Pareto Chart?
a. Determining Process capability
b. Learning the vital few (most common) types of defects
c. Determining significance of operator errors
Correct Answers/ Full Solutions
What is the Mean, Mode & Median for the data in Column 1, Data Set A?
a. Mean = 8.7, Mode = 8, Median = 7
b. Mean = 8.7, Mode = 7, Median = 8
c. Mean = 8, Mode = 8.7, Median = 7
d. Mean = 7, Mode = 7, Median = 8.7
e. Mean = 8, Mode = 8, Median = 7 - CORRECT ANSWER- Answer B
Formula:
Mean = Sum(x)/n = 8.7
Mode = Most frequent value = 7
Median = because sample is even (n=50), the median is the average of the (n/2)th and ((n/2)+1)th values
in the sorted series = 8
Please reference Quantifying Process Variability for more information.
A call center was experiencing customer complaints about time-on-hold and an improvement team was
formed to solve the problem. The manager of the call center joined the team's first meeting and
informed the team that their project would be short-lived because the obvious solution to the time-on-
hold problem was to add more phone lines. With this advice as a basis, the team crafted a problem
statement: "Additional phone lines are needed in order to reduce the average customer time-on-hold
from 6.2 minutes to our target of 45 seconds".
Which of the following best describes the problem statement?
a. The statement is too broad to be useful in the particular situation.
b. The statement contains a solution.
,c. The statement is not related to the problem described above.
d. This is a good problem statement.
e. The statement does not fully define "time-on-hold". - CORRECT ANSWER- Answer B
The problem statement dictates that the solution is "additional phone lines". Please reference Project
Charter for more information.
What will a stakeholder analysis (RACI matrix) help the team do?
a. Narrow the project scope.
b. Reduce the likelihood of project roadblocks.
c. Choose effective team members.
d. Develop a focused problem statement.
e. Choose the most optimal project to pursue. - CORRECT ANSWER- Answer B
A stakeholder analysis is used to 1) identify those entities that will have influence on the project, 2)
identify the type of influence and 3) develop strategies to realize the positive influences and reduce any
roadblocks due to the negative influences. Please reference Stakeholder Analysis - RACI Matrix for more
information.
When analyzing a process, which of the following terms represents the inputs?
a. f(X)
b. X
c. Y
d. Result
e. Cost - CORRECT ANSWER- Answer B
f(X) is the Transfer Function; Y is the process output, also sometimes referred to as the Result; Cost
could be either an input or output. Please reference Input Determines Output for more information.
, The fishbone diagram is used for which of the following?
a. To follow the movement of people in a process
b. To determine process capability
c. To categorize input variables that may be important
d. To prioritize the highest frequency problems
e. To show the process flow - CORRECT ANSWER- Answer C
Please reference Cause & Effect Diagram Toolset for more information.
What is missing from the following Project Charter Business Case statement: "Process Cycle Time must
be reduced in order to meet customer requirements" ?
a. Team leader
b. Scope of project, including "included" and "not included"
c. Amount of improvement required and business impact
d. Measurement system to be used
e. Resources required - CORRECT ANSWER- Answer C
The business case should state the level of improvement required, otherwise, there will be no may to
measure success. In addition, the economic impact should be included so that it is clear why this project
is a priority vs. something else.
Please reference Project Charter Toolset for more information.
Which of the following is a use for a Pareto Chart?
a. Determining Process capability
b. Learning the vital few (most common) types of defects
c. Determining significance of operator errors
