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PUBH 6033—Week 10 Assignment 1
Identifying Risks and Hazards—Part 1
(Rubric included)
Instructions
For this Assignment, review this week’s Learning Resources. Open SPSS and then use the file/open/data command to open the dataset asbestos.sav. This is data collected on the incidence of lung cancer for those exposed to asbestos and those not exposed.
Run a chi-square for independence and odds ratio analysis as per this Week’s demonstration video. Then, provide your response to all items in this worksheet.
Note: You will use the SPSS Output generated in this Assignment 1 to complete Assignment 2 as well.
Submit this Application Assignment by Day 7.
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Note: Scores are to be entered by instructor
Step 1: Set up your hypothesis and determine the level of significance
State the alternative/research hypothesis in written format.
Answer: ____ / 6 points
State the null hypothesis in written format
Answer: ____ / 6 points
What is your level of significance (choose α = .05 or α = .01)?
Answer: ____ / 4 points
Step 2: Select the appropriate test statistic
What is the appropriate test statistic?
Answer: ____ / 4 points
Based on the level of significance you set in step 1, what is your decision rule?
Note: Because there are 2 rows and 2 columns, the total degrees of freedom is 1.
Answer: ____ / 6 points
Step 4: Compute the test statistic
Open SPSS and then use the file/open/data command to open the dataset asbestos.sav.
Select: Analyze > Descriptive Statistics > Crosstabs
Move asbestos to the Row(s) box, and lungca to the Column(s) box. Click on Statistics and make sure Chi-Square and RISK are checked. Click on Cells, and check Observed and Expected (frequencies). Click Continue; click OK.
What is the χ2 value computed by your SPSS analysis?
Answer: ____ / 4 points
Paste your SPSS output here:
Answer: ____ / 20 points
Step 5: Conclusion
Do you reject or fail to reject the null hypothesis?
Answer: ____ / 6 points
Is there an association between asbestos exposure and lung cancer?
Answer: ____ / 4 points
Section below (scoring) is to be completed by Instructor
Scoring Rubric for Week 10 Assignment1
Identifying Risks and Hazards—part 1 (60 points)
Timeliness
Fully Met
Partially Met/Good
Partially Met/Fair
Not Met
Timeliness Indicators
Posted by the deadline
Posted 1 day late
Posted 2–4 days late
Posted 5 or more days late
Grade impact
No impact
10% reduction in overall assignment score
20% reduction in overall assignment score
0 points
Initial Score (60 possible points):
Timeliness Factor (late points deducted):
Total Score (60 possible points):
Instructor comments:
PUBH 6033—Week 10 Assignment 2
Identifying Risks and Hazards—Part 2
(Rubric included)
Instructions
For this Assignment, review this week’s Learning Resources. You will refer back to and use the SPSS output generated in this week’s Assignment 1 for this assignment as well. This output is based on the asbestos.sav dataset that related to the incidence of lung cancer for those exposed to asbestos and those not exposed. Be sure to refer back to that output and then provide your response to all items in this worksheet.
Submit this Application Assignment by Day 7.
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Note: Scores are to be entered by instructor
From the SPSS output generated in this week’s Assignment 1, copy only your odds ratio analysis (“Risk Estimate”) portion of the output and paste, below:
Answer: ____ / 10 points
The p-value associated with a chi-square test only suggests whether or not the results are statistically significant. Why is it important to also look at the odds ratio?
Answer: ____ / 10 points
What does the odds ratio value in the SPSS output tell you, specifically, about lung cancer and exposure to asbestos?
Answer: ____ / 10 points
Based on your answer above, would you say there is a strong association between asbestos exposure and lung cancer?
Answer: ____ / 10 points
From the SPSS output generated in this week’s Assignment 1, copy only your “asbestos * lung cancer Crosstabulation” portion of the output and paste, below:
Answer: ____ / 10 points
Using the formula provided in this week’s Learning Resources, and the data in the cross-tabulation output, calculate the odds ratio and show your work in your answer, below.
Answer: ____ / 10 points
Section below (scoring) is to be completed by Instructor
Scoring Rubric for Week 10 Assignment 2
Identifying Risks and Hazards—Part 2 (60 points)
Timeliness
Fully Met
Partially Met/Good
Partially Met/Fair
Not Met
Timeliness Indicators
Posted by the deadline
Posted 1 day late
Posted 2–4 days late
Posted 5 or more days late
Grade impact
No impact
10% reduction in overall assignment score
20% reduction in overall assignment score
0 points
Initial Score (60 possible points):
Timeliness Factor (late points deducted):
Total Score (60 possible points):
Instructor comments:
This is the SPSS DATA. To be uses for the questions
asbestos2.sav
Although you should have received file by email (and it is also opposed in weekly discussion), I am also posting file here too. Best,
asbestos2.sav
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