BUS 308 HELPS Inspiring Minds/bus308helps.com

1
BUS 308 HELPS Inspiring
Minds/bus308helps.com
2
BUS 308 HELPS Inspiring
Minds

• BUS 308 Entire Course (Ash Course)
• For more course tutorials visit
• www.bus308helps.com
• BUS 308 Week 1 Assignment Problems 1.2, 1.17, 3.3
  3.22
• BUS 308 Week 1 DQ 1 Performance Report
• BUS 308 Week 1 DQ 2 The Empirical Rule vs.
  Chebyshev Theorem
• BUS 308 Week 1 Quiz (10 MCQ)

3
BUS 308 HELPS Inspiring
Minds

• BUS 308 Week 1 DQ 1 Language
• For more course tutorials visit
• www.bus308helps.com
• 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?

4
BUS 308 HELPS Inspiring
Minds

• BUS 308 Week 1 DQ 2 Probability
• For more course tutorials visit
• www.bus308helps.com
• 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

5
BUS 308 HELPS Inspiring
Minds

• BUS 308 Week 1 Problem Set
• For more course tutorials visit
• www.bus308helps.com
• 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.

6
BUS 308 HELPS Inspiring
Minds

• BUS 308 Week 1 Quiz (New)
• For more course tutorials visit
• www.bus308helps.com
• 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

7
BUS 308 HELPS Inspiring
Minds

• BUS 308 Week 1 Quiz
• For more course tutorials visit
• www.bus308helps.com
• 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?

8
BUS 308 HELPS Inspiring
Minds

• BUS 308 Week 2 DQ 1 Hypotheses
• For more course tutorials visit
• www.bus308helps.com
• 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?

9
BUS 308 HELPS Inspiring
Minds

• BUS 308 Week 2 DQ 2 Variation
• For more course tutorials visit
• www.bus308helps.com
• 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).

10
BUS 308 HELPS Inspiring
Minds

• BUS 308 Week 2 Problem Set
• For more course tutorials visit
• www.bus308helps.com
• 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.

11
BUS 308 HELPS Inspiring
Minds

• BUS 308 Week 2 Quiz (New)
• For more course tutorials visit
• www.bus308helps.com
• 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

12
BUS 308 HELPS Inspiring
Minds

• BUS 308 Week 2 Quiz
• For more course tutorials visit
• www.bus308helps.com
• 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?

13
BUS 308 HELPS Inspiring
Minds

• BUS 308 Week 3 DQ 1 ANOVA
• For more course tutorials visit
• www.bus308helps.com
• 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).

14
BUS 308 HELPS Inspiring
Minds

• BUS 308 Week 3 DQ 2 Effect Size
• For more course tutorials visit
• www.bus308helps.com
• 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?

15
BUS 308 HELPS Inspiring
Minds

• BUS 308 Week 3 Problem Set
• For more course tutorials visit
• www.bus308helps.com
• 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.

16
BUS 308 HELPS Inspiring
Minds

• BUS 308 Week 4 DQ 1 Confidence Intervals
• For more course tutorials visit
• www.bus308helps.com
• 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?

17
BUS 308 HELPS Inspiring
Minds

• BUS 308 Week 4 DQ 2 Chi-Square Tests
• For more course tutorials visit
• www.bus308helps.com
• 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?

18
BUS 308 HELPS Inspiring
Minds

• BUS 308 Week 4 Problem Set
• For more course tutorials visit
• www.bus308helps.com
• 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

19
BUS 308 HELPS Inspiring
Minds

• BUS 308 Week 4 Quiz (New)
• For more course tutorials visit
• www.bus308helps.com
• 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

20
BUS 308 HELPS Inspiring
Minds

• BUS 308 Week 4 Quiz
• For more course tutorials visit
• www.bus308helps.com
• 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?

21
BUS 308 HELPS Inspiring
Minds

• BUS 308 Week 5 DQ 1 Correlation
• For more course tutorials visit
• www.bus308helps.com
• 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?

22
BUS 308 HELPS Inspiring
Minds

• BUS 308 Week 5 DQ 2 Regression
• For more course tutorials visit
• www.bus308helps.com
• 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?

23
BUS 308 HELPS Inspiring
Minds

• BUS 308 Week 5 Final Paper (2 Papers)
• For more course tutorials visit
• www.bus308helps.com
• 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).

24
BUS 308 HELPS Inspiring
Minds

• BUS 308 Week 5 Problem Set
• For more course tutorials visit
• www.bus308helps.com
• 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?

25
BUS 308 HELPS Inspiring
Minds