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QNT 275 Entire Course
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QNT 275 Week 1 Individual
Assignment Statistics in Business
QNT 275 Week 1 DQ 1
QNT 275 Week 1 DQ 2
QNT 275 Week 1 DQ 3
QNT 275 Week 2 Activity Data Set
QNT 275 Week 2 Individual
Assignment Business Decision
Making Project, Part 1
QNT 275 Week 2 DQ 1
QNT 275 Final Exam Guide
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QNT 275 Final Exam Guide
1. The salaries of teachers in a
particular school district are normally
distributed with a mean of $50,000
and a standard deviation of $2,500.
Due to budget limitations, it has been
decided that the teachers who are in
the top 2.5% of the salaries would
not get a raise. What is the salary
level that divides the teachers into
one group that gets a raise and one
that doesn’t?
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QNT 275 Week 1 DQ 1
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What is the importance of statistics
in business decision making?
Describe a business situation where
statistics was used in making a
decision.
QNT 275 Week 1 DQ 2
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Select four variables, other than what
your fellow students have already
selected, that could be measured by
nominal, ordinal, interval, and ratio
scale. Classify them by measurement
scale and select descriptive statistics
that can be used to summarize data.
Use the following table when posting
your response:
Variable
Level of Measurement
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QNT 275 Week 1 DQ 3
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How do we define measurement?
What are various levels of
measurement? How do you select
measurement levels when developing
a survey or data collection tool?
Explain with examples.
QNT 275 Week 1 Individual
Assignment Statistics in Business
(2 Papers)
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This Tutorial contains 2 Papers
Develop a 875-word response that
addresses each of the following
prompts:
§ Define statistics with citation and
reference.
§ Contrast quantitative data and
qualitative data. Use two Peer
Reviewed references.
§ Evaluate tables and charts used to
represent quantitative and qualitative
data.
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QNT 275 Week 2 Assignment
Mini-Project 3-2
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You are employed as a statistician for
a company that makes household
products, which are sold by part-time
salespersons who work during their
spare time.The company has four
salespersons employed in a small
town. Let us denote these
salespersons by A, B, C, and D.
QNT 275 Week 2 DQ 1
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Describe a business situation, other
than what has already been selected
by fellow students or selected from
the team assignment, where mean
and standard deviation can be used
in decision making. Describe how
calculation of mean and standard
deviation can help in making a
decision.
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QNT 275 Week 2 DQ 2
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What are the various methods one
can use to identify the shape of data
distribution collected for research
study? Why it is important to know
the shape of distribution? How it can
be used in decision making? Provide
examples other than those already
posted in class.
QNT 275 Week 2 DQ 3
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Select an article from a news
magazine or research journal where
data is displayed in a pie or bar
chart. Describe the data displayed in
the chart and what conclusion you
could draw.
QNT 275 Slingshot Academy /
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QNT 275 Week 2 Individual
Assignment Activity Data Set
(Little Town Cafe)
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Review the following business
scenario:
You are the manager in a small
town in the lake district of a
Midwestern state enjoys a robust
tourist season during the summer
months, but has only a small
population of residents during the
off season. The Littletown Café
adjusts the levels of staff according
to the time of year, to coincide
with the number of guests
QNT 275 Week 2 Quiz
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QNT 275 Week 2 Quiz
1.
In order to summarize
qualitative data, a useful tool is a
__________.
2.
A stem-and-leaf diagram is
constructed by separating each value
of a data set into two parts.What
are these parts?
QNT 275 Slingshot Academy /
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QNT 275 Week 3 CLO Business
Decision Making Project Part 1
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CLO Business Decision-Making
Project Part 1
Identify a business problem or
opportunity at a company where you
work or with which you're familiar.
This will be a business problem that
you use for the individual
assignments in Weeks 3-5. It should
be a problem/opportunity for which
gathering and analyzing some type
of data would help you understand
the problem/opportunity better.
QNT 275 Week 3 DQ 1
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An oil change shop advertised to
change oil within 15 minutes. Based
on the data collected on a typical
day, what is the probability that oil
change will take 15 minutes or less
time? Based on the data, do you
think the business claim is valid?
Explain why or why not.
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QNT 275 Week 3 DQ 2
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What are some conditions under
which business decisions are made
using subjective probability concepts?
Provide at least two examples of
subjective probability.
QNT 275 Week 3 DQ 3
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What are the characteristics of
standard normal distribution? The HR
department of an organization
collects data on employees' age,
salary, level of education, gender, and
ethnicity. Which data do you think is
more likely to follow normal
distribution? Explain why.
QNT 275 Slingshot Academy /
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QNT 275 Week 3 Probability Case
Study 5.2
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Week 3 Learning Team Collaboration
Discussion: Probability
Resource: Case Study 5.2 in Chapter
5 of Essentials of Business Statistics
Calculate the requested probabilities
for items 1-3.
Discuss your findings for the
probabilities.
QNT 275 Week 3 Quiz
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QNT 275 Week 3 Quiz
Question 1:
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You work
in marketing for a company that
produces work boots. Quality
control has sent you a memo
detailing the length of time before
the boots wear out under heavy
use. They find that the boots wear
out in an average of 208 days, but
the exact amount of time varies,
following a normal distribution
with a standard deviation of 14
days.
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QNT 275 Week 4 CLO Business
Decision Making Project Part 2
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CLO Business Decision Making
Project, Part 2
Use the same business
problem/opportunity and research
variable you wrote about in Week 3.
Remember: do not actually collect
any data; think hypothetically.
Develop a 1,050-word report in
which you:
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Identify the types of
descriptive statistics that might be
best for summarizing the data, if you
were to collect a sample.
QNT 275 Week 4 DQ 1
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What is the difference between an
independent and a dependent
variable? Does a regression model
imply causation? Explain why or why
not
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QNT 275 Week 4 DQ 2
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Does correlation equal causation?
Does the strength of correlation
depend on the direction? What is the
meaning of a zero correlation?
Explain your answers.
QNT 275 Week 4 DQ 3
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What are the requirements that
must be met for a regression
analysis? What happens if these
requirements are violated? Why is
analysis of residuals important?
QNT 275 Slingshot Academy /
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QNT 275 Week 4 Linear
Regression Case 12.1
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Resource: Case Study 12.1 in
Chapter 12 of Essentials of Business
Statistics.
Click the Sushi Restaurant Data Set
link.
Calculate the linear regression in
item 1 of the case study.
Discuss the following with your team:
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Explain if simple regression or
multiple regression is more
appropriate for making predictions in
this case.
QNT 275 Week 4 Quiz
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QNT 275 Week 4 Quiz
Question 1:
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Serial
correlation is typically observed in:
Question 2:
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Another
name for an explanatory variable is
the ___.
Question 3:
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Which of the
following variables is not qualitative?
QNT 275 Slingshot Academy /
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QNT 275 Week 5 CLO Business
Decision Making Project Part 3
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CLO Business Decision Making
Project, Part 3
Prepare an 11- to 15-slide
Microsoft® PowerPoint® presentation
for the senior management team
based on the business problem or
opportunity you described in Weeks
3-4.
QNT 275 Week 5 DQ 1
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How would you select appropriat
e statistical tests for analysis resea
rch data? What aspects of researc
h questions or data type
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QNT 275 Week 5 DQ 2
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How do you know you have validated
a research study based on data gath
ered from primary or secondary sour
ces? Have you been involved with an
y product testmarketing project? Explain. How did t
he resulting statistics affect the produ
ct's marketing strategy? How can org
anizations skew the statistical outco
mes of their business research?
QNT 275 Week 5 DQ 3
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In what way has the learning from thi
s course helped you to effectively test
hypotheses, draw conclusions, and pr
ovide recommendations to managem
ent? Consider what you have achieve
d in your research study conducted f
or this course.
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