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QNT 275 Course Experience Tradition /
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QNT 275 Entire Course
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 Week 2 DQ 2 QNT 275 Week 2 DQ
3 QNT 275 Week 3 Individual Business Decision
Making Project, Part 2
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QNT 275 Final Exam Guide
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 doesnt?
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QNT 275 Week 1 DQ 1
What is the importance of statistics in business
decision making? Describe a business situation
where statistics was used in making a decision.
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QNT 275 Week 1 DQ 2
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 Descriptive Stat and Justify
Selection Nominal Ordinal Interval Ratio
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QNT 275 Week 1 DQ 3
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.
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QNT 275 Week 1 Individual Assignment Statistics
in Business (2 Papers)
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.
Describe the levels of data measurement.
Describe the role of statistics in business
decision-making. Provide at least two business
research questions, or problem situations, in
which statistics was used or could be used.
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QNT 275 Week 2 Assignment Mini-Project 3-2
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. The sales
records (in dollars) for the past 6 weeks for
these four salespersons are shown in the table
below. Week A B C D 1
1774 2205 1330 1402 2
1808 1507 1295 1665 3 1890
2352 1502 1530 4 1932 1939
1104 1826 5 1855 2052 1189
1703
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QNT 275 Course Experience Tradition /
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QNT 275 Week 2 DQ 1
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
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.
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QNT 275 Week 2 DQ 3
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.
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QNT 275 Week 2 Individual Assignment Activity
Data Set (Little Town Cafe)
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, with the tourist
season typically starting around Memorial Day
each year. One wait staff employee can serve 50
guests. When a bus staff employee is added, the
pair can serve 75 guests. At 76 guests, the café
adds a second wait staff employee, for a total of
2 waiters and one busser. Analysis of guest
numbers can support future decisions about
scheduling wait staff, dishwashers, and bus staff
for the café.
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QNT 275 Week 2 Quiz
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? 3.
A recent survey of 200 small firms (annual
revenue less than 10 million) asked whether an
increase in the minimum wage would cause the firm
to decrease capital spending. Possible responses
to the survey question were "Yes," "No," or
"Don't Know." These data are best classified as
____________.
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QNT 275 Week 3 CLO Business Decision Making
Project Part 1
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. Identify a research variable within the
problem/opportunity that could be measured with
some type of data collection. Consider methods
for collecting a suitable sample of either
qualitative or quantitative data for the variable.
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QNT 275 Week 3 DQ 1
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.  Class
Interval Frequency 6 to 10 minutes 3 11 to 15
minutes 8 16 to 20 minutes 6 21 to 25 minutes
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QNT 275 Week 3 DQ 2
What are some conditions under which business
decisions are made using subjective probability
concepts? Provide at least two examples of
subjective probability.
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QNT 275 Week 3 DQ 3
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.
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QNT 275 Week 3 Probability Case Study 5.2
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. What was the smoking trend from
1997-2007? Is this a discrete, continuous, or
conditional probability? Why? How do
probabilities help you understand trends in
data? What steps might you recommend, related
to smoking behavior, based on this trend?
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QNT 275 Week 3 Quiz
QNT 275 Week 3 Quiz Question 1
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. For an upcoming ad campaign, you need to
know the percent of the pairs that last longer
than six months-that is, 180 days. Use the
empirical rule to approximate this
percent. Question 2 For any normally
distributed random variable with mean µ and
standard deviation s, the percent of the
observations that fall between µ-2s and µ2s is
closest to _______.
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QNT 275 Week 4 CLO Business Decision Making
Project Part 2
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 Identify the types of
descriptive statistics that might be best for
summarizing the data, if you were to collect a
sample. Analyze the types of
inferential statistics that might be best for
analyzing the data, if you were to collect a
sample. Analyze the role probability or
trend analysis might play in helping address the
business problem.
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QNT 275 Course Experience Tradition /
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QNT 275 Week 4 DQ 1
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
Does correlation equal causation? Does the
strength of correlation depend on the direction?
What is the meaning of a zero correlation?
Explain your answers.
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QNT 275 Week 4 DQ 3
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?
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QNT 275 Week 4 Linear Regression Case 12.1
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
Explain if simple regression or multiple
regression is more appropriate for making
predictions in this case. Predict what
will happen to sales based on unemployment rate
and the level of advertising Justify
your predictions.
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QNT 275 Week 4 Quiz
QNT 275 Week 4 Quiz Question 1
Serial correlation is typically observed
in Question 2 Another name for
an explanatory variable is the ___. Question 3
Which of the following variables
is not qualitative? Question 4
Consider the following simple linear regression
model yßoß1(xe) The response variable is
Question 5 Which of the
following violates the assumptions of regression
analysis? Question 6 In a simple
linear regression model, if the plots on a
scatter diagram lie on a straight line, what is
the standard error of the estimate?
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QNT 275 Week 5 CLO Business Decision Making
Project Part 3
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. Include
on the slides what you'd want the audience to see
(include appropriate visual aids/layout) and
include in the Speaker's Notes section what you'd
say as you present each slide. If any source
material is quoted or paraphrased in the
presentation, use APA citations and
references. Draw on material you developed in the
Weeks 3-4 assignments.
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QNT 275 Course Experience Tradition /
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QNT 275 Week 5 DQ 1
How would you select appropriate statistical tests
 for analysis research data? What aspects of resea
rch questions or data types are relevant considera
tions in choosing your tests? Why?
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QNT 275 Course Experience Tradition /
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QNT 275 Week 5 DQ 2
How do you know you have validated a research stud
y based on data gathered from primary or secondary
 sources? Have you been involved with any product 
test-marketing project? Explain. How did the resul
ting statistics affect the product's marketing str
ategy? How can organizations skew the statistical 
outcomes of their business research?  
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QNT 275 Course Experience Tradition /
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QNT 275 Week 5 DQ 3
In what way has the learning from this course help
ed you to effectively test hypotheses, draw conclu
sions, and provide recommendations to management? 
Consider what you have achieved in your research s
tudy conducted for this course.  
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QNT 275 Course Experience Tradition /
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How do you think we build a future? I think we
build it by investing in our kids and investing
in education
For more Courses
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