In this blog you will find the correct answer of the Coursera quiz Six Sigma Tools for Improve and Control Coursera Answer mixsaver always try to brings best blogs and best coupon codes
Week- 1
Correlation and Regression Graded Quiz
1.
Question 1
If you are studying the relationship between the
age of the manufacturing equipment at your facility and the hours of downtime
of that equipment, what would the DEPENDENT variable be?
1 point
- Neither the age of the
manufacturing equipment and the hours of downtime of the equipment - Hours of downtime of the equipment
- Both the age of the manufacturing equipment and the hours of downtime of the equipment
- Age of the manufacturing
equipment
2.
Question 2
A scatter plot in which the plotted points are
clustered approximately into a straight line from the top left to the bottom
right of the graph is displaying which of the following:
1 point
- Bimodal correlation
- Positive correlation
- Negative correlation
- No correlation
3.
Question 3
If the
pass rate of exams increases with study time, then the correlation coefficient
for the study time versus exams would be:
1 point
- Between 0 and -1
- Greater than 1
- Between 0 and +1
- Equal to 1
4.
Question 4
Which of the following statements are true about
correlation?
1 point
- A negative correlation
coefficient means that there is not a strong relationship between the variables - r can only range from 0 to 1
- The correlation coefficient can range from -1 to +1
- The lower the correlation
coefficient is, the weaker the correlation is
5.
Question 5
In the
equation for basic linear regression, what does the term “b” represent?
1 point
- The slope of the line
- The error
- The x intercept
- The y intercept
6.
Question 6
The least squares method is used for what?
1 point
- Determining the regression
equation - Calculating the correlation
coefficient - Simplifying algebraic
equations - The central limit theorem
7.
Question 7
You collect sample data to calculate the
relationship between age of the manufacturing equipment at your facility and
the hours of downtime of that equipment.
Using data ranging from 0.5 years old to 20 years old for the equipment,
you obtain the regression equation for annual hours of downtime of y=10+0.5x
with a high correlation coefficient. How
many hours of downtime would you predict for equipment that is 8 years old?
(Round to the nearest 10th of a year)
1 point
- You cannot use this
regression equation to answer the question - 8.0
- 14.0
- 4.0
8.
Question 8
Where is regression analysis most often used by
six sigma professionals?
1 point
- In the define phase for the
is-is not analysis - In the improve phase to
estimate gains after the projected improvement - In the analyze phase for
statistical sampling - In the control phase for
the process behavior chart
Week- 2
Hypothesis Testing Graded Quiz
1.
Question 1
If you want to
test the claim that the mean length of widgets has changed from 4.3 meters,
what would your null hypothesis be?
1 point
2.
Question 2
A null hypothesis states that a process has not
changed over time. If a type II error is
made,
1 point
One has failed to reject
the null hypothesis when it was true
One has rejected the null
hypothesis when it was true
One has failed to reject
the null hypothesis when it was false
One has rejected the null
hypothesis when it was false
3.
Question 3
Suppose you want to test the claim that the mean
length of process time has decreased from 12.3 minutes. Your sample data leads you to fail to reject
H0. The actual mean length is 12.0
minutes. What type of error, if any,
have you made?
1 point
Another test should be done
A type II error has been
made
No error has been made
A type I error has been
made
4.
Question 4
If your hypothesis test is:
what type of test will you
need to do?
1 point
Binomial
Right-tailed
Left-tailed
Two-tailed
5.
Question 5
While performing a hypothesis test, you
calculate a p-value of 0.05. If the
desired level of significance is 0.01 then the conclusion is:
1 point
Reject the null hypothesis
because there is a statistical difference.
Reject the null hypothesis
because there is no statistical difference.
Fail to reject the null
hypothesis because there is no statistical difference.
Fail to reject the null
hypothesis because there is a statistical difference.
Week- 3
Improvement Techniques Graded Quiz
1.
Question 1
Maximizing the performance of one machine or one
department could have a negative effect on another machine or department, and
subsequently on the organization as a whole.
This is an example of:
1 point
Over-optimization
Productivity optimization
Alternate optimization
Sub-optimization
2.
Question 2
Employee empowerment is a key element of Kaizen.
1 point
True
False
3.
Question 3
Improvements through both Kaizen and Kaizen
Blitz must be carefully managed.
1 point
True
False
4.
Question 4
Deming’s version of the model is Plan, Do,
Study, Act. He changed check to study
because he wanted it to be a plan for management, and he wanted them to use
this step to compare results with predictions.
1 point
True
False
5.
Question 5
The PDCA model is complex, and you should have
an expert to lead the team.
1 point
True
False
6.
Question 6
Which of these statements best describes net
present value?
1 point
A way to determine the value of future
investments.
A way to determine the value of future benefits.
The sum of present values of incoming and outgoing cash flows over a period of time.
A way to compare present costs with future
costs.
7.
Question 7
Payback Period is usually
1 point
18 months.
24 months.
12 months.
It depends.
8.
Question 8
Internal rate of return usually reflects the
anticipated inflation rate.
1 point
True
False
9.
Question 9
When an organization first starts to address
quality issues, external failures are likely to go down, while both appraisal
costs and internal failures will go up.
1 point
True
False
10.
Question 10
Generally the cost of quality will be lowest
with a strong focus on:
1 point
Appraisal
External Failures
Prevention
Internal failures
Week- 4
Control Tools and Documentation Graded Quiz
1.
Question 1
An example of special cause
variation would not include:
1 point
Lack of supervision skills
No training
No preventive maintenance
No documentation
2.
Question 2
Control charts for averages
behave like what distribution?
1 point
Euler Phi
Normal
Weibull
Poisson
3.
Question 3
In order to have a rational
sample, we seek to have all of the following except:
1 point
Desired differences within samples minimized
Desired differences between samples minimized
Sub group size
Desired differences between samples maximized
4.
Question 4
If we want to detect a large
shift, we need a smaller sample size
1 point
True
False
5.
Question 5
Control is the process employed to meet customer
expectations
1 point
True
False
6.
Question 6
A pitfall of document control would not
include:
1 point
High Distribution
Lack of stakeholder
involvement
Old Revisions in use
Use of electronic media
7.
Question 7
One of focus areas in the P-D-C-A process is:
1 point
How do we control it
How do we do it
How do we plan it
What are our goals
8.
Question 8
Control charting is only for monitoring
1 point
True
False
9.
Question 9
Document management includes all processes
except:
1 point
Creation
Deletion
Distribution
All of the above
10.
Question 10
After
you assign causes and eliminate problems, you need to remove the _____________.
1 point
centerline
out of control points
upper and lower limits
points on the centerline
Week- 5
Peer-graded Assignment: Yellow Belt Capstone Project
Important Link of Another Course:
