WGU D469 Performance Assessment Fully
Questions With Complete Solution
Which of the following charts will be used to study observed data for trends or patterns over a specified
period of time and focus attention on vital changes in the process?
*Data forward chart
*Scatter plot
*Min/max plot
*Run chart - ANS -Run chart
A run chart shows trends and patterns over time and is used to assess the stability of the process.
What is another name for an Ishikawa diagram?
*Fishbone diagram
*Cause and effect diagram
*6 M diagram
*All of the above - ANS -All of the above
Ishikawa diagrams (also called fishbone diagrams, 6M, herringbone diagrams, or cause and effect
diagrams) are causal diagrams created by Kaoru Ishikawa that show the causes of a specific effect.
What is the main responsibility of a Six Sigma Master Black Belt?
A) To impart training to the employees
B) To provide financial support to Six Sigma projects
C) To run Green Belt and Black Belt projects
D) To drive Six Sigma culture in the company - ANS -D
,Six Sigma Master Black Belts are at the top in Six Sigma belts hierarchy. The main responsibilities of a
Master Black Belt are to drive Six Sigma culture and mentor Black Belts to lead various improvement
projects. Master Black Belts also identify improvement opportunities at the strategic level and lead
some high-impact strategic-level improvement projects.
T/F A process can be defined as a series of actions or steps taken to achieve a particular end. - ANS -True
A process is a sequence of interdependent and linked procedures that, at every stage, consume one or
more resources (employee time, energy, machines, money) to convert inputs (data, material, parts) into
outputs. These outputs then serve as inputs for the next stage until a known goal or end result is
reached.
___________ are measurements of potential consequences (±) on other areas of a process as a result of
changes in the primary metrics.
*Parallel process metrics
*Industry standards
*Tertiary metrics
*Secondary metrics - ANS -Secondary metrics
The purpose of defining and measuring secondary metrics within an improvement project is to measure
the effects on other areas as a result of changes in the primary metric.
Which control chart is used for rejection data with the same number of units in each sample?
*P chart
*U chart
*Np chart
*C chart - ANS -NP Chart
The np control chart is used for discrete data when we want to plot defective/rejection data with a
constant sample size.
, Improving the process capability (Cpk) will ____________the requirements of quality control activities
such as inspections and testing.
*not change
*increase
*completely eliminate
*reduce - ANS -Reduce
A process with higher capability has a very low probability of generating defectives. The higher the
process capability, the better the process is at meeting specifications. Therefore, the chances of
deploying quality control activities are reduced when the process capability improves.
In which of the following cases is it best to use multiple linear regression (MLR)?
A) Assessing whether or not one dependent variable can be predicted from a set of independent
variables
B) Determining how much variance in a dependent variable can be explained by independent variables
C) When the BB does not know which independent variables will create the best prediction
D) All of the above - ANS -D
When there is one dependent variable (Y) and one independent variable (X), we use simple linear
regression to predict the value of Y. In case of more than one independent variable (X), we need to use
multiple linear regression. Also, because we do not know which independent variable (X) will have a
significant impact on Y, this needs to be checked using multiple regression. It is used to determine how
much variance in a dependent variable can be explained by multiple independent variables.
T/F In statistical hypothesis testing, you must establish the type 2 error first and then define the value of
the type 1 error. - ANS -False
We must establish the type 1 error first by defining the confidence level prior to considering the type 2
error. Increasing the sample size reduces the type 2 error; however, increasing the confidence level
reduces the type 1 error.
Which of the following tests would be used to compare the means of the three teams?
Questions With Complete Solution
Which of the following charts will be used to study observed data for trends or patterns over a specified
period of time and focus attention on vital changes in the process?
*Data forward chart
*Scatter plot
*Min/max plot
*Run chart - ANS -Run chart
A run chart shows trends and patterns over time and is used to assess the stability of the process.
What is another name for an Ishikawa diagram?
*Fishbone diagram
*Cause and effect diagram
*6 M diagram
*All of the above - ANS -All of the above
Ishikawa diagrams (also called fishbone diagrams, 6M, herringbone diagrams, or cause and effect
diagrams) are causal diagrams created by Kaoru Ishikawa that show the causes of a specific effect.
What is the main responsibility of a Six Sigma Master Black Belt?
A) To impart training to the employees
B) To provide financial support to Six Sigma projects
C) To run Green Belt and Black Belt projects
D) To drive Six Sigma culture in the company - ANS -D
,Six Sigma Master Black Belts are at the top in Six Sigma belts hierarchy. The main responsibilities of a
Master Black Belt are to drive Six Sigma culture and mentor Black Belts to lead various improvement
projects. Master Black Belts also identify improvement opportunities at the strategic level and lead
some high-impact strategic-level improvement projects.
T/F A process can be defined as a series of actions or steps taken to achieve a particular end. - ANS -True
A process is a sequence of interdependent and linked procedures that, at every stage, consume one or
more resources (employee time, energy, machines, money) to convert inputs (data, material, parts) into
outputs. These outputs then serve as inputs for the next stage until a known goal or end result is
reached.
___________ are measurements of potential consequences (±) on other areas of a process as a result of
changes in the primary metrics.
*Parallel process metrics
*Industry standards
*Tertiary metrics
*Secondary metrics - ANS -Secondary metrics
The purpose of defining and measuring secondary metrics within an improvement project is to measure
the effects on other areas as a result of changes in the primary metric.
Which control chart is used for rejection data with the same number of units in each sample?
*P chart
*U chart
*Np chart
*C chart - ANS -NP Chart
The np control chart is used for discrete data when we want to plot defective/rejection data with a
constant sample size.
, Improving the process capability (Cpk) will ____________the requirements of quality control activities
such as inspections and testing.
*not change
*increase
*completely eliminate
*reduce - ANS -Reduce
A process with higher capability has a very low probability of generating defectives. The higher the
process capability, the better the process is at meeting specifications. Therefore, the chances of
deploying quality control activities are reduced when the process capability improves.
In which of the following cases is it best to use multiple linear regression (MLR)?
A) Assessing whether or not one dependent variable can be predicted from a set of independent
variables
B) Determining how much variance in a dependent variable can be explained by independent variables
C) When the BB does not know which independent variables will create the best prediction
D) All of the above - ANS -D
When there is one dependent variable (Y) and one independent variable (X), we use simple linear
regression to predict the value of Y. In case of more than one independent variable (X), we need to use
multiple linear regression. Also, because we do not know which independent variable (X) will have a
significant impact on Y, this needs to be checked using multiple regression. It is used to determine how
much variance in a dependent variable can be explained by multiple independent variables.
T/F In statistical hypothesis testing, you must establish the type 2 error first and then define the value of
the type 1 error. - ANS -False
We must establish the type 1 error first by defining the confidence level prior to considering the type 2
error. Increasing the sample size reduces the type 2 error; however, increasing the confidence level
reduces the type 1 error.
Which of the following tests would be used to compare the means of the three teams?
