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• BUS 308 Entire Course (Ash Course)

• BUS 308 Entire Course (New)

• BUS 308 Week 1 Assignment Problems 1.2, 1.17, 3.3
  3.22BUS 308 Week 1 DQ 1 Performance ReportBUS
  308 Week 1 DQ 2 The Empirical Rule vs. Chebyshev
  TheoremBUS 308 Week 1 Quiz (10 MCQ)BUS 308 Week
  2 Assignments Problems 4.4, 4.20, 5.12,
  6.22(a)BUS 308 Week 2 DQ 1 Relative Frequency

• BUS 308 Week 1 DQ 1 Data ScalesBUS 308 Week 1 DQ
  2 ProbabilityBUS 308 Week 1 QuizBUS 308 Week 1
  Problem Set Week OneBUS 308 Week 2 JournalBUS
  308 Week 2 DQ 1 t-Tests

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• BUS 308 Week 1 Assignment Problems 1.2, 1.17, 3.3
  and 3.22 (Ash Course)

• BUS 308 Week 1 DQ 1 Language

• BUS 308 Week 1 Problems 1.2, 1.17, 3.3 and 3.22

• 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?

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• BUS 308 Week 1 DQ 1 Performance Report (Ash
  Course)

• BUS 308 Week 1 DQ 2 Probability

• You are the manager at a company and are asked to
  present a report on the year-to-date performance
  of your division. What type of statistical
  information would you include in your report? In
  particular, which descriptive statistics (mean,
  median, standard deviation, etc.) do you think
  would best represent the main aspects of the
  performance of your division? What types of
  graphical presentation (histogram, dot plot,
  stem-and-leaf, bar chart, etc.) would you
  include? Explain your reasoning
•  

• 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.

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• BUS 308 Week 1 DQ 2 The Empirical Rule vs.
  Chebyshev Theorem (Ash Course)

• BUS 308 Week 1 Problem Set

• The Empirical Rule vs. Chebyshevs
  TheoremDiscuss how the Empirical Rule works and
  how it relates to the bell curve as illustrated
  in Figure 3.14 (a). Then, explain Chebyshevs
  Theorem and how it is different from the
  Empirical Rule. Give a specific example of a
  population with which the Empirical Rule might be
  most effective and one with which Chebyshevs
  Theorem might be most effective. Respond to at
  least two of your classmates postings.

• 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.

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• BUS 308 Week 1 Quiz (10 MCQ) (Ash Course)

• BUS 308 Week 1 Quiz (New)

• 1. Question The two types of quantitative
  variables are
• 2. Question As a general rule, when creating a
  stem-and-leaf display, there should be between
  ______ stem values.

• 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.

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• BUS 308 Week 1 Quiz

• BUS 308 Week 2 Assignments Problems 4.4, 4.20,
  5.12, 6.22(a) (Ash Course)

• 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?

• BUS 308 Week 2 Assignments Problems 4.4, 4.20,
  5.12, 6.22(a)

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• BUS 308 Week 2 DQ 1 Hypotheses

• BUS 308 Week 2 DQ 1 Relative Frequency (Ash
  Course)

• 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?

• Relative Frequency. Conceptually we would expect
  the probability of newborn males and females to
  be the same. However, census reports indicate
  that the ratios of males and females in various
  countries do not conform to the theoretical
  prediction. What do you think accounts for this
  variation? Can you think of other cases where the
  expected probabilities do not quite agree with
  the empirical values?

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• BUS 308 Week 2 DQ 2 Applications for Probability
  (Ash Course)

• BUS 308 Week 2 DQ 2 Variation

• Applications for Probability. In what situations
  might you use probability as a manager to
  approach business-related problems? What are the
  advantages to using probability concepts in
  business decisions? Are there any disadvantages
  or possible pitfalls to avoid in using
  probability in business?

• 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?

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• BUS 308 Week 2 Problem Set

• BUS 308 Week 2 Quiz (10 MCQ) (Ash Course)

• Problem Set Week TwoComplete the problems below
  and submit your work in an Excel document. Be
  sure to show all of your work and clearly label
  all calculations.

• 1. Question In a statistical study, the random
  variable X 1, if the house is colonial, and X
  0 if the house is not colonial, then it can be
  stated that the random variable is continuous.
• 2. Question The set of all possible
  experimental outcomes is called a(n)

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• BUS 308 Week 2 Quiz (New)

• BUS 308 Week 2 Quiz

• 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?

• 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?

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• BUS 308 Week 3 Assignments Problems 7.11, 7.30,
  8.8, 8.38 (Ash Course)

• BUS 308 Week 3 DQ 1 ANOVA

• BUS 308 Week 3 Assignments Problems 7.11, 7.30,
  8.8, 8.38

• 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?

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• BUS 308 Week 3 DQ 1 Unscientific Sampling (Ash
  Course)

• BUS 308 Week 3 DQ 2 Article Review (Ash Course)

• Unscientific Sampling. Consider question 7.45
  from the text A Milwaukee television station,
  WITI-TV, conducted a telephone call-in survey
  asking whether viewers liked the new newspaper,
  the Journal Sentinel

• Article Review. Many articles present statistical
  data and list margins of error (for example,
  reports on political opinion polls, growth or
  decline of the housing markets, manufacturing
  sectors, etc.). Find one such article from a
  reliable source (such as EBSCO or Proquest) in
  the online library that includes a construction
  of confidence intervals for the data studied, and
  give a summary of the topic and the statistical
  results presented.

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• BUS 308 Week 3 DQ 2 Effect Size

• BUS 308 Week 3 Problem Set

• 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?

• 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.)

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• BUS 308 Week 3 Quiz (10 MCQ) (Ash Course)

• BUS 308 Week 4 Assignments Problems 9.13, 9.22,
  12.10, 12.18(a) (Ash Course)

• 1. Question There is little difference between
  the values of ta/2 and Za/2 when the sample
• 2. Question If the population proportion is .4
  with a sample size of 20, then is this sample
  large enough so that the sampling distribution of
  is a normal distribution.

• BUS 308 Week 4 Assignments Problems 9.13, 9.22,
  12.10, 12.18(a)

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• BUS 308 Week 4 DQ 1 Confidence Intervals

• BUS 308 Week 4 DQ 1 Hypothesis Test (Ash Course)

• 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?

• Give an example of a hypothesis test you could
  perform at work or at home. State what the Null
  and the Alternative hypotheses would be in your
  test. Explain how you would settle on a
  reasonable level of significance for your
  scenario. Also explain what the type I and II
  errors would be if you reached the incorrect
  conclusion in your test.

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• BUS 308 Week 4 DQ 2 Chi-Square Tests

• BUS 308 Week 4 DQ 2 Creating Hypotheses (Ash
  Course)

• 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?

• Creating Hypotheses. Assume you are the manager
  of a paint manufacturing factory. Your company
  has received complaints from customers that the
  containers hold less than the amount printed on
  them. On the other hand, corporate management is
  concerned that the containers hold more than the
  standard amount. You assign a statistician to
  verify these claims

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• BUS 308 Week 4 Problem Set

• BUS 308 Week 4 Quiz (10 MCQ) (Ash Course)

• ASSIGNMENT WEEK 4Lets 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

• 1. Question Consider using p-value to test H0
  versus Ha by setting a equal to .10. We reject H0
  at level a of significance if and only if the
  p-value is
• 2. Question When carrying out a sample test
  (with ó known) of H0 µ 10 vs. Ha µ gt 10 by
  using a rejection point, we reject Ho at level of
  significance a if and only if the calculated test
  statistic is

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• BUS 308 Week 4 Quiz (New)

• BUS 308 Week 4 Quiz

• 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.

• 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?

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• BUS 308 Week 5 DQ 1 Correlation

• BUS 308 Week 5 DQ 1 Linear Correlation (Ash
  Course)

• 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?

• Linear Correlation. Do you think there is a
  correlation between CEO salaries and the degree
  of success of a company? If you were to take a
  sample of companies with comparable size, market
  capitalization, and product category, and plot
  CEO salaries against the net profit of their
  respective companies, do you expect to find a
  linear correlation between the two? Explain

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• BUS 308 Week 5 DQ 2 Quality Control (Ash Course)

• BUS 308 Week 5 DQ 2 Regression

• Quality Control. Visit the websites on Quality
  Control (QC) listed in the Required Websites for
  this week. In addition, locate an article on the
  Internet or in the Library databases that
  describes an example of the use of statistics in
  Quality Control. In your post, briefly define
  Quality Control and explain its importance.

• 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?

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• BUS 308 Week 5 Final Paper (2 Papers)

• BUS 308 Week 5 Final Part I - Excel (Ash Course)

• 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).

• Calculate the mean yearly value using the average
  gas prices by month found in the"Final Project
  Data Set".
• 2.Using the years as your x-axis and the annual
  mean as your y-axis, create a scatterplotand a
  linear regression line.
• 3.Answer the following questions using your
  scatterplot and linear regression line What is
  the slope of the linear regression line? What is
  the Y-intercept of the linear regression line?

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• BUS 308 Week 5 Final Part II Analysis Paper on
  gas prices

• BUS 308 Week 5 Problem Set

• Imagine that you are a manager at a delivery
  service and you are creating a report toproject
  the effects on your company of rising gas prices
  in the next ten years.
• Using thepreceding statistical analysis as your
  basis and outside scholarly resources to support
  yourclaims

• 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.

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