Ashford BUS308 2020 September All Assignments Latest

BUS308 Statistics for Managers

Week 1 Assignment   

ID            Salary    Compa  Midpoint             Age        Performance Rating        Service Gender                Raise     Degree Gender1                Grade

1              60.2        1.056     57           34           85           8              0              5.7          0              M            E

2              27.7        0.893     31           52           80           7              0              3.9          0              M            B

3              35.5        1.145     31           30           75           5              1              3.6          1              F              B

4              56.1        0.985     57           42           100         16           0              5.5          1              M            E

5              48.9        1.018     48           36           90           16           0              5.7          1              M            D

                                              

Week 1: Descriptive Statistics, including Probability                                                                                                                                         

While the lectures will examine our equal pay question from the compa-ratio viewpoint, our weekly assignments will focus on examining the issue using the salary measure.                                                                                                                                            

                                                                                                                               

The purpose of this assignmnent is two fold:                                                                                                                                     

1. Demonstrate mastery with Excel tools.                                                                                                                                                            

2. Develop descriptive statistics to help examine the question.                                                                                                                 

3. Interpret descriptive outcomes                                                                                                                                                                                                                                                                                                                                                                           

The first issue in examining salary data to determine if we - as a company - are paying males and females equally for doing equal work is to develop some

descriptive statistics to give us something to make a preliminary decision on whether we have an issue or not.                                                                                                                                 

1              Descriptive Statistics: Develop basic descriptive statistics for Salary                                                                                          

                The first step in analyzing data sets is to find some summary descriptive statistics for key variables.                                                         

                Suggestion: Copy the gender1 and salary columns from the Data tab to columns T and U at the right.                                                     

                Then use Data Sort (by gender1) to get all the male and female salary values grouped together.                                                                                                                                                               

                a.            Use the Descriptive Statistics function in the Data Analysis tab                                    Place Excel outcome in Cell K19

                                to develop the descriptive statistics summary for the overall                                                                                      

                                group's overall salary.  (Place K19 in output range.)                                                                                                         

                                Highlight the mean, sample standard deviation, and range.                                                                                                                                                                                                                                                                         

 

BUS308 Statistics for Managers

Week 2 Assignment          

Week 2: Identifying Significant Differences - part 1                                                                                                                                                                                                                                                                          

To Ensure full credit for each question, you need to show how you got your results.  This involves either showing where the data you used is located                      

or showing the excel formula in each cell.             Be sure to copy the appropriate data columns from the data tab to the right for your use this week.                                                                                                                                

As with our examination of compa-ratio in the lecture, the first question we have about salary between the genders involves equality - are they the same or different?

What we do, depends upon our findings.                                                                                                                                                                                                                                                                                                            

1              As with the compa-ratio lecture example, we want to examine salary variation within the groups - are they equal?                Use Cell K10 for the Excel test outcome location.

                a              What is the data input ranged used for this question:                                                                                                                   

                b             Which is needed for this question:  a one- or two-tail hypothesis statement and test ?                                                                   Answer:                                                                                                                                                              

                                Why:                                                                                                                                                                                                                                                                                    

                What is your conclusion about the variance in the population for male and female salaries?                                                                                                                                                                                                                                        

2              Once we know about variance quality, we can move on to means: Are male and female average salaries equal?                Use Cell K35 for the Excel test outcome location.

                (Regardless of the outcome of the above F-test, assume equal variances for this test.)                                                                                 

                a              What is the data input ranged used for this question:                                                                                    

                b             Does this question need a one or two-tail hypothesis statement and test?                                                                                                                                                                                                                                                                                                                          

BUS308 Statistics for Managers

Week 3 Assignment          

Week 3: Identifying Significant Differences - part 2                          

To Ensure full credit for each question, you need to show how you got your results.  This involves either showing where the data you used is located                                                                                      

or showing the excel formula in each cell.                                             Be sure to copy the appropriate data columns from the data tab to the right for your use this week.                                                                 

1              A good pay program will have different average salaries by grade.  Is this the case for our company?                                                                                                                                      

                a              What is the data input ranged used for this question:                                                                     Use Cell K08 for the Excel test outcome location.                      

                Note: assume equal variances for each grade, even though this may not be accurate, for purposes of this question.                                                                                                                               

                b.    Step 1:          Ho:                                                                                                                                                                                                                                                                                                                                                                                                                        

What is your conclusion about the means in the population for grade salaries?                                                                                  

2              If the null hypothesis in question 1 was rejected, which pairs of means differ?                                                                                                                                                                  

                (Use the values from the ANOVA table to complete the follow table.)                                                                   

                                                                                                                                                                               

BUS308 Statistics for Managers

Week 4 Assignment  

Week 4: Identifying relationships - correlations and regression                                                                                                                                                                                                                                                                                  

To Ensure full credit for each question, you need to show how you got your results.  This involves either showing where the data you used is located                      

or showing the excel formula in each cell.                             Be sure to copy the appropriate data columns from the data tab to the right for your use this week.              

                                                                                                                                                                                               

1              What is the correlation between and among the interval/ratio level variables with salary?  (Do not include compa-ratio in this question.)                   

                a. Create the correlation table.                                                                                                  Use Cell K08 for the Excel test outcome location.

                i.        What is the data input ranged used for this question:                                                                                                                    

                ii.             Create a correlation table in cell K08.                                                                                                                                                                     

                b. Technically, we should perform a hypothesis testing on each correlation to determine                                                             

                if it is significant or not.  However, we can be faithful to the process and save some                                                        

                time by finding the minimum correlation that would result in a two tail rejection of the null.                                       

                We can then compare each correlation to this value, and those exceeding it (in either a                                                                

                positive or negative direction) can be considered statistically significant.                                                                                                               

                                                                                      

BUS308 Statistics for Managers

Week 5 Assignment   

Final Paper

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).

In your paper,

Discuss the following course elements:

Descriptive statistics

Inferential statistics

Hypothesis development and testing

Selection of appropriate statistical tests

Evaluating statistical results.

The Final Paper

Must be three to five double-spaced pages in length (not including title and references pages) and formatted according to APA style as outlined in the Ashford Writing Center (Links to an external site.).

Must include a separate title page with the following:

Title of paper

Student’s name

Course name and number

Instructor’s name