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BUS 308 Help Bcome Exceptional / bus308mentor.com
Education must, be not only a transmission of
culture but also a provider of alternative views
of the world and a strengthener of the will to
explore them
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BUS 308 Help Bcome Exceptional / bus308mentor.com
BUS 308 Entire Course(NEW)
BUS 308 Week 1 DQ 1 Language BUS 308 Week 1 DQ 2
Probability BUS 308 Week 1 Quiz BUS 308 Week 1
Problem Set BUS 308 Week 1 Quiz (New) BUS 308
Week 2 DQ 1 Hypotheses BUS 308 Week 2 DQ 2
Variation BUS 308 Week 2 Quiz BUS 308 Week 2 Quiz
(New) BUS 308 Week 2 Problem Set BUS 308 Week 3
DQ 1 ANOVA BUS 308 Week 3 DQ 2 Effect Size
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BUS 308 Help Bcome Exceptional / bus308mentor.com
BUS 308 Week 1 DQ 1 Language
Discussion 1-1/Language Numbers and measurements
are the language of business. Organizations look
at results in many ways expenses, quality
levels, efficiencies, time, costs, etc. What
measures does your department keep track of? Are
they descriptive or inferential data, and what is
the difference between these?(Note If you do not
have a job where measures are available to you,
ask someone you know for some examples, or
conduct outside research on an interest of yours,
or use personal measures.)
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BUS 308 Week 1 DQ 2 Probability
Things vary in life virtually nothing (except
physical standards such as the speed of light) we
interact with is constant over time. Much of this
variation follows somewhat predictable patterns
that can be examined using probability. An
example of a subjective probability is Cops
usually do not patrol this road, so I can get
away with speeding. An empirical probability
example is Each production run has a 5 reject
rate. A classical (or theoretical) probability
example is This die has six sides, so I should
see the number 2 come up 1/6th of the
time.   What are some examples of probability
outcomes in your work or life? How would looking
at them in terms of probabilities help us
understand what is going on? How does the normal
curve relate to activities/things you are
associated with?
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BUS 308 Week 1 Problem Set
1. For assistance with these
calculations, see the Recommended Resources for
Week One. Measurement issues. Data, even
numerically code variables, can be one of 4
levels nominal, ordinal, interval, or ratio. It
is important to identify which level a variable
is, as this impacts the kind of analysis we can
do with the data. For example, descriptive
statistics such as means can only be done on
interval or ratio level data. Please list, under
each label, the variables in our data set that
belong in each group.. 2. The first step
in analyzing data sets is to find some summary
descriptive statistics for key variables. For
salary, compa, age, Performance Rating, and
Service find the mean and standard deviation for
3 groups overall sample, Females, and Males. You
can use either the Data Analysis Descriptive
Statistics tool or the Fx average and stdev
functions. Note Place data to the right, if you
use Descriptive statistics, place that to the
right as well
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BUS 308 Week 1 Quiz (New)
1. Question In statistical
notation, M is to µ as s is to s. Question 2.
Question A parameter refers to a sample
characteristic. Question 3. Question
Data on the city from which members of a board of
directors come represent interval data. Question
4. Question In a frequency
distribution such as a bell-shaped curve, what
does the vertical height of the curve
indicate? Question 5. Question The z
transformation makes data normal. Question 6.
Question Data on the ages of customers
are ratio scale data.
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BUS 308 Week 1 Quiz
1. Question Data on the city from
which members of a board of directors come
represent interval data. 2. Question
Inferential statistics infer the
characteristics of samples. 3. Question
The mode is which of the following? 4.
Question The standard error of the
mean can be calculated by dividing µ by the
square root of the number of values in the
distribution. 5. Question If a
certifying agency raises the requirements for
real estate agents, what sort of decision error
is the agency protecting against? 6.
Question Which of the following defines
statistical significance?
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BUS 308 Week 2 DQ 1 Hypotheses
Discussion 2-1/Hypotheses What is a hypothesis
test? Why do we need to use them to make
decisions about relating sample results to the
population why cant we just make our decisions
by the sample value?
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BUS 308 Week 2 DQ 2 Variation
Variation exists in virtually all parts of our
lives. We often see variation in results in what
we spend (utility costs each month, food costs,
business supplies, etc.). Consider the measures
and data you use (in either your personal or job
activities). When are differences (between one
time period and another, between different
production lines, etc.) between average or actual
results important? How can you or your department
decide whether or not the observed differences
over time are important? How could using a mean
difference test help?
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BUS 308 Week 2 Problem Set
Problem Set Week Two   Complete the problems
below and submit your work in an Excel document.
Be sure to show all of your work and clearly
label all calculations. All statistical
calculations will use the   Included in the Week
Two tab of theEmployee Salary Data Set are 2
one-sample t-tests comparing male and female
average salaries to the overall sample mean.
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BUS 308 Week 2 Quiz (New)
1. Question What is the
relationship between the power of a statistical
test and decision errors? Question 2.
Question The desired sample depends on
all of these factors except? Question 3.
Question What question does the z test
answer? Question 4. Question The
desired sample size depends only the size of the
population to be tested. Question 5. Question
Each different t-distribution is defined
by which of the following? Question 6.
Question What is the alternate hypothesis
in a problem where sales group two is predicted
to be . . . significantly less productive than
sales group one?
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BUS 308 Week 2 Quiz
1. Question How is the sum of
squares unlike either the standard deviation or
the variance? 2. Question If sums
of squares statistics are calculated for shoppers
at three different retail outlets, what statistic
will indicate the variability among those at each
outlet? 3. Question Which is the
symbol used for the test statistic in ANOVA? 4.
Question If ANOVA reveals that four
different departments have significantly
different levels of productivity, what will a
post-hoc test indicate? 5. Question
The independent t-test is based on which
distribution?
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BUS 308 Week 3 DQ 1 ANOVA
In many ways, comparing multiple sample means is
simply an extension of what we covered last week.
Just as we had 3 versions of the t-test (1
sample, 2 sample (with and without equal
variance), and paired we have several versions
of ANOVA single factor, factorial (called
2-factor with replication in Excel), and
within-subjects (2-factor without replication in
Excel). What examples (professional, personal,
social) can you provide on when we might use each
type?What would be the appropriate hypotheses
statements for each example?
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BUS 308 Week 3 DQ 2 Effect Size
Several statistical tests have a way to measure
effect size. What is this, and when might you
want to use it in looking at results from these
tests on job related data?
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BUS 308 Week 3 Problem Set
ASSIGNMENT WEEK 3    Complete the problems below
and submit your work in an Excel document. Be
sure to show all of your work and clearly label
all calculations. All statistical calculations
will use the   (Note Questions 1- 4 have
additional elements to respond to below the
analysis results.) 1. Last week, we
found that the average performance ratings do not
differ between males and females in the
population. Now we need to see if they differ
among the grades. Is the average performance
rating the same for all grades? (Assume variances
are equal across the grades for this ANOVA.)
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BUS 308 Week 4 DQ 1 Confidence Intervals
Discussion 4-1/Confidence Intervals Many people
do not like or trust single point estimates
for things they need measured. Looking back at
the data examples you have provided in the
previous discussion questions on this issue, how
might adding confidence intervals help managers
accept the results better? Why? Ask a manger in
your organization if they would prefer a single
point estimate or a range for important measures,
and why? Please share what they say
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BUS 308 Help Bcome Exceptional / bus308mentor.com
BUS 308 Week 4 DQ 2 Chi-Square Tests
Discussion 4-2/Chi-Square Tests Chi-square tests
are great to show if distributions differ or if
two variables interact in producing outcomes.
What are some examples of variables that you
might want to check using the chi-square tests?
What would these results tell you?
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BUS 308 Week 4 Problem Set
ASSIGNMENT WEEK 4   Lets look at some other
factors that might influence pay. Complete the
problems below and submit your work in an Excel
document. Be sure to show all of your work and
clearly label all calculations. All statistical
calculations will use the 1. Using our
sample data, construct a 95 confidence interval
for the population's mean salary for each gender.
Interpret the results. How do they compare with
the findings in the week 2 one sample t-test
outcomes (Question 1)?
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BUS 308 Week 4 Quiz (New)
1. Question The goodness of fit
test null hypothesis states that the sample data
does not match an expected distribution. Question
2. Question Statistical significance
in the Chi-square test means the population
distribution (expected) is not the source of the
sample (observed) data. Question 3. Question
While rejecting the null hypothesis for
the goodness of fit test means distributions
differ, rejecting the null for the test of
independence means the variables
interact Question 4. Question The
null hypothesis for the test of independence
states that no correlation exists between the
variables. Question 5. Question For a
one sample confidence interval, the interval is
calculated around the calculated sample mean (m).
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BUS 308 Week 4 Quiz
1. Question With reference to
problem 1, what statistic determines the
correlation of experience with productivity,
controlling for age in experience? 2.
Question In a problem where interest
rates and growth of the economy are used to
predict consumer spending, which of the following
will increase prediction error? 3.
Question With reference to problem 3, how
is the regression constant or the a value
interpreted? 4. Question Which of
the following is a problem in simple regression?
5. Question In a problem where
average temperature and number of daylight hours
are used to predict energy consumption in homes,
what does the standard error of multiple estimate
gauge?
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BUS 308 Week 5 DQ 1 Correlation
Discussion 5-1/Correlation What results in your
departments seem to be correlated or related to
other activities? How could you verify this?
Create a null and alternate hypothesis for one of
these issues. What are the managerial
implications of a correlation between these
variables?
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BUS 308 Week 5 DQ 2 Regression
Discussion 5-2/Regression At times we can
generate a regression equation to explain
outcomes. For example, an employees salary can
often be explained by their pay grade, appraisal
rating, education level, etc. What variables
might explain or predict an outcome in your
department or life? If you generated a regression
equation, how would you interpret it and the
residuals from it?
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BUS 308 Week 5 Final Paper (2 Papers)
This tutorial contains 2 Different Papers The
final paper provides you with an opportunity to
integrate and reflect on what you have learned
during the class. The question to address is
What have you learned about statistics? In
developing your responses, consider at a
minimum and discuss the application of each of
the course elements in analyzing and making
decisions about data (counts and/or
measurements). The course elements
include Descriptive statistics Inferential
statistics Hypothesis development and testing
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BUS 308 Week 5 Problem Set
ASSIGNMENT WEEK 5 1. Create a
correlation table for the variables in our (Use
analysis ToolPak or StatPlusmac LE function
Correlation). a. Reviewing the data
levels from week 1, what variables can be used in
a Pearsons Correlation Table (which is what
Excel produces)? b. Place the table
here. c. Using r approximately .28 as
the significant r value (at p .05) for a
correlation between 50 values, what variables are
significantly related to salary? To compa?
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BUS 308 Help Bcome Exceptional / bus308mentor.com
Education must, be not only a transmission of
culture but also a provider of alternative views
of the world and a strengthener of the will to
explore them
For more Courses
Visit Now
www.bus308mentor.com