BUS308 Week 3 Homework, Latest September 2018 (Fall) Data, All work shown in EXCEL Template

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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:

   

Ha:

  

Step 2:


Significance (Alpha):

  

Step 3:


Test Statistic and test:

   

Why this test?

  

Step 4:


Decision rule:

  

Step 5:


Conduct the test - place test   function in cell K08

                      

Step 6:


Conclusion and   Interpretation

    

What is the p-value:

    

What is your decision: REJ   or NOT reject the null?

    

Why?

 

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.)

  

Groups Compared


Mean Diff.


T value used


+/- Term


Low


to 


High


Difference Significant?


Why?

  

A-B

  

A-C

  

A-D

  

A-E

  

A-F

                      

B-C

  

B-D

  

B-E

  

B-E

                      

C-D

  

C-E

  

C-F

                      

D-E

  

D-F

                      

E-F

                     

3


One issue in salary is the   grade an employee is in - higher grades have higher salaries.

  

This suggests that one   question to ask is if males and females are distributed in a similar pattern   across the salary grades?

  

a


What is the data input   ranged used for this question:


Use Cell K54 for the   Excel test outcome location.

                      

b. Step 1:


Ho:

   

Ha:

  

Step 2:


Significance (Alpha):

  

Step 3:


Test Statistic and test:


Place the actual distribution   in the table below.

   

Why this test?


A


B


C


D


E


F


Sum

  

Step 4:


Decision rule:


Male








0

  

Step 5:


Conduct the test - place   test function in cell K54


Female








0

           

Sum:


0


0


0


0


0


0


0

  

Step 6:


Conclusion and   Interpretation


Place the expected   distribution in the table below.

    

What is the p-value:


A


B


C


D


E


F

    

What is your decision: REJ   or NOT reject the null?


Male








0

    

Why?


Female








0

 

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


Sum:


0


0


0


0


0


0


0

                                                                                                                                         

4


What implications do this   week's analysis have for our equal pay question?

  

Your findings:

  

The lecture's related   findings:

  

Overall conclusion:

  

Why - what statistical results   support this conclusion?

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