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Which of the following items is part of a team charter, developed in the Define step?
The solution
The root cause
A Problem / Goal Statement
Which of the following techniques is most likely to help you in the first step within Improve where you are identifying all potential solutions?
Priority based matrix
Paired comparisons
Random Words
You have been asked to measure the queuing time for customers at the branch of a bank. Which of the following sampling options will be most appropriate.?
Measure all day, every day for the first week of the next month
Measure each morning every day for the first two weeks of the next month
Measure for a period of 10 minutes in every hour for the next month
Which of the following is a measure of process capability?
FMEA
QFD
Cp
If the team fails to spend time in the Control phase of DMAIC which of these is most likely to occur?
The team will have the wrong composition
The process improvement will not be maintained
The wrong root cause will be identified
Which of the following tools would be most appropriate to display ongoing cycle time performance in the credit dispatch process?
Scatter diagram
Histogram
Pareto
X-moving R control chart
If a process is in statistical control:
It is meeting the CTQs
It is stable and predictable
There are special causes present
The stakeholder analysis
Is used mainly in the Define phase
Is used mainly in the Measure phase
Is used mainly in the Improve phase
Should be reviewed throughout the project and updated accordingly
Guage R and R stands for:
Roles and Responsibilities
Repeatability and Reproducibility
Rolls Royce
Reliability and Regularity
We set the control limits around +/-3 standard deviations because:
99.73 of data will fall within this so it is unlikely a point will naturally fall outside
Operating at three sigma is good enough for most processes
Motorolla identified a 1.5 sigma shift in either direction.
Using the XmR Control Charts, calculate the control limits for X, where the mean of the first 20 data points is 25, and the mean for the moving range is 3.5. Give your answer rounded to 2 decimal places. Please use this format 00.00
UCLx =
LCLx =
The difference between defects and defectives is:
There is no difference
A defect identifies a failure to meet a CTQ whereas a defective identifies a unit which may contain several defects
A defect is an error made by us whereas a defective is an error made by the customer
If you have a severity rating of 6, an occurrence rating of 5 and a detection rating of 6, what is your RPN?
RPN =
The key output of Analyse is:
A solution to the problem
The vital few root causes
A response plan
One use of sigma measures is to:
Understand if there is a correlation between the X and the Y
Understand how well different processes perform
Identify the type of variation in the process
Which of the following steps are Customer value added (identify all)?
Take order
Transfer order onto suppliers database
Check the address is correct
Ring the customer to obtain missing information
Deliver order
Copy the signed order to accounts
Gauge R and R is:
A way of predicting what will go wrong with a project
An indicator of measure system reliability
The method used to determine R squared
Continuous data:
is less data rich than attribute data
Will need a smaller sample size than attribute data
Cannot be used in a scatter diagram
Calculate the sigma value for the following process where: The number of units process is 250, the number of defects is 106 and there are 2 defect opportunities per unit. (Answer to 1 decimal point) Sigma Value =
What is the mean of this data set: ( 3, 5, 7, 18, 11, 6, 18, 6, 12, 8) Please use the format 0.0
Mean =
An Xbar R chart is used:
For attribute data
For data with varying sample sizes plus the range
For plotting the means and ranges of subgrouped samples
The most important CTQs are derived from:
Your manager or team leader
Last years performance + 10%
Beating your competitors performance
The external customer
The correlation co-efficient:
Helps validate your ideas about the vital few root causes
Identified the difference between the performance in 2 teams
Confirms whether an improvement initiative has worked
Is either zero or a positive number
A full factoral experiment with 2 levels and 5 factors will require?
Number of runs =
A process has been analysed and the temperature measured with a mean of 104.5. The upper control limit is 131 and the lower control limit is 76. The process is in control. Assuming the CTQ is a temperature range between 68 and 130 – how would you describe the “state of the process”?
Ideal (meets CTQ and in control)
Threshold (not meeting the CTQ and in control)
On the brink (meeting the CTQ but out of control)
Chaos (not meeting CTQ and out of control)
Which of the following would usually indicate natural (common cause) variation?
A point outside the control limits
An increasing trend over time
Usual small variations in data between the control limits
Which of the following is a continuous measure?
Day of the week a service is completed
The type of defect
Cycle time to complete the service
Scope creep is often a problem with projects. Which of these tools would NOT help manage it?
Tollgate reviews
SIPOC
ANOVA
In/Out of Frame
Histograms which two or humps suggest?
There is an error in the data collection
Segmentation would be useful
Data transformation is needed
To move our client from dissatisfied to satisfied which of these requirements will be of LEAST importance?
Dissatisfiers
Satisfiers
Delighters
When you make a change in a process to improve performance should you expect the process initially to:
Stay in control
Go out of control
In the scatter diagram the vertical axis is:
The cause
The effect
When analyzing Voice of the Customer data to derive CTQs which of the following tools is LEAST likely to be useful?
Affinity diagram
Tree diagram
Kano model
Theory of constraints
Another way to describe cause and effect is?
Y’s and X’s
P’s and Q’s
X’s and Y’s
SIPOC is a clear deliverable of which DMAIC phase (select 1)?
Define
Measure
Analyse
Improve
Control
A display of data in a time sequence is called?
A histogram
A pie chart
A run chart
A scatter diagram
Histograms are used to:
Display the distribution of historical process data
Identify special cause variation
Display a time series plot
CTQs should be expressed in a format that?
Is clearly measurable
Contains the solution
Represents the voice of the process
The Risk Priority Number applies to:
Force Field analysis
A sample must be:
Representative
Large
Segmented
Poke Yoke is about:
Identifying what is important to a customer
Inspection
Prevention
The 80:20 rule
The sampling formula n = 2s/dy)² gives a confidence level of:
99%
95%
99.9996%
66%
The upper and lower control limits on a control chart are derived from:
The customer specification and CTQs
The targets set by management
The actual process data
Which of the following techniques is a form of hypothesis testing?
Fishbone
R&R
Operational Definitions help ensure:
Consistent measurement
An accurate team charter
A comprehensive SIPOC
Which of the following statements best describes DPMO?
Defects per manufacturing operation and is a lean measure of waste
Defects per million opportunities and is a lean measure of value add
Defects per manufacturing operation and is often referred to as parts per million
Defects per million opportunities and is a six sigma measure of process capability
If a company is operating at 2 sigma, what percentage of its customers are experiencing defects?
Approx. 10%
Approx. 20%
Approx. 30%
Approx. 70%
A process is:
A series of steps and actions that produce an output
A one of task
Only applicable to manufacturing organisations
