SIX SIGMA BLACK BELT EXAM 6
QUESTIONS WITH 100% VERIFIED
CORRECT ANSWERS!!
The primary focus of Six Sigma
quality and consistency
The acronym for the Lean Six Sigma cycle
DMAIC
What does the acronym DPMO represent?
Defects Per Million Opportunities
The number of DPMO in a Six Sigma process.
3.4
What percent of the observations, data points, or events will fall between plus and minus 1
standard deviation of the mean?
68 Precent
What percent of the observations, data points, or events will fall within plus and minus 6
standard deviations of the mean?
99.9997 Percent
A process generates a sample mean beyond the UCL. But the process mean has not shifted.
What type of error has been made?
Alpha
What type of chart is used to monitor sample means, when the size of the sample is between
12 and 25 and the data are continuous?
X-Bar Chart
,The statistical terms that define the quality expected by customers and include on a process
control chart.
Lower Specification Limit and Upper Specification Limit
The type of process control chart in which sample means are displayed and the data are
continuous.
X-Bar Chart
The type of process control chart that displays process variation when the sample size is
less than twelve and the data are continuous
R-Chart
The distribution that describes the way in which sample means vary around the population
mean.
Distribution of Sample Means
The statistic that measures the variation in a distribution by taking into consideration only
the highest and lowest values in a dataset.
Range
Purpose of the X-Bar chart.
To ensure that the process mean has not shifted, and that the process is in-control.
Another phrase for a process flow diagram that illustrates process steps and delays.
Value Stream Map
A term that represents the real cause of a problem.
Root Cause
What does Y=f(x) represent?
The relationship between process inputs and process outputs. Y represents outputs, and x
represents inputs. Outputs are therefore a 'function of' inputs.
, What is USL?
Upper Specification Limit. The level above which output is considered to be unacceptable by the
customer. For example, service levels at a call center where wait time is more than ten minutes.
The meaning of COPQ.
Cost of Poor Quality. The 'total' costs incurred by the organization when quality is less than
desirable.
Pareto Chart
A variation of the ordered histogram displaying the cumulative percent that eliminating
successive problem categories will contribute to solving the overall set of problems expressed in
the chart.
Value Added
A concept in Lean that identifies the value added by a step in an operational process. Value
added is defined from the customer's point-of-view. As long as the customer receives value from
a process step, it is considered "Value-Added."
Can a process mean be changed by moving the LCL and UCL?
No. The process itself would have to be changed. A change in the LCL and UCL would only
change the alpha and beta errors.
A goal when using a Value Stream Map analysis.
Eliminate non-value-added steps.
When designing a new X-Bar Chart, how is the process mean positioned on the chart?
Several preliminary groups of samples are taken - usually in the range of five groups - and the
average of all of these groups is used to estimate the process mean. So we are talking about the
average of the averages, or a "Grand Mean."
The statistic that expresses the variation in the distribution of sample means.
Standard Error of the Mean
QUESTIONS WITH 100% VERIFIED
CORRECT ANSWERS!!
The primary focus of Six Sigma
quality and consistency
The acronym for the Lean Six Sigma cycle
DMAIC
What does the acronym DPMO represent?
Defects Per Million Opportunities
The number of DPMO in a Six Sigma process.
3.4
What percent of the observations, data points, or events will fall between plus and minus 1
standard deviation of the mean?
68 Precent
What percent of the observations, data points, or events will fall within plus and minus 6
standard deviations of the mean?
99.9997 Percent
A process generates a sample mean beyond the UCL. But the process mean has not shifted.
What type of error has been made?
Alpha
What type of chart is used to monitor sample means, when the size of the sample is between
12 and 25 and the data are continuous?
X-Bar Chart
,The statistical terms that define the quality expected by customers and include on a process
control chart.
Lower Specification Limit and Upper Specification Limit
The type of process control chart in which sample means are displayed and the data are
continuous.
X-Bar Chart
The type of process control chart that displays process variation when the sample size is
less than twelve and the data are continuous
R-Chart
The distribution that describes the way in which sample means vary around the population
mean.
Distribution of Sample Means
The statistic that measures the variation in a distribution by taking into consideration only
the highest and lowest values in a dataset.
Range
Purpose of the X-Bar chart.
To ensure that the process mean has not shifted, and that the process is in-control.
Another phrase for a process flow diagram that illustrates process steps and delays.
Value Stream Map
A term that represents the real cause of a problem.
Root Cause
What does Y=f(x) represent?
The relationship between process inputs and process outputs. Y represents outputs, and x
represents inputs. Outputs are therefore a 'function of' inputs.
, What is USL?
Upper Specification Limit. The level above which output is considered to be unacceptable by the
customer. For example, service levels at a call center where wait time is more than ten minutes.
The meaning of COPQ.
Cost of Poor Quality. The 'total' costs incurred by the organization when quality is less than
desirable.
Pareto Chart
A variation of the ordered histogram displaying the cumulative percent that eliminating
successive problem categories will contribute to solving the overall set of problems expressed in
the chart.
Value Added
A concept in Lean that identifies the value added by a step in an operational process. Value
added is defined from the customer's point-of-view. As long as the customer receives value from
a process step, it is considered "Value-Added."
Can a process mean be changed by moving the LCL and UCL?
No. The process itself would have to be changed. A change in the LCL and UCL would only
change the alpha and beta errors.
A goal when using a Value Stream Map analysis.
Eliminate non-value-added steps.
When designing a new X-Bar Chart, how is the process mean positioned on the chart?
Several preliminary groups of samples are taken - usually in the range of five groups - and the
average of all of these groups is used to estimate the process mean. So we are talking about the
average of the averages, or a "Grand Mean."
The statistic that expresses the variation in the distribution of sample means.
Standard Error of the Mean
