historical data that suggests height tends to decrease with age in elderly populations

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1.       Researchers are interested in the relationship between BMI & education. They think there may be a difference in BMI between those who graduated high school & those who did not. Run an appropriate test to determine this, & report on the results. The researchers did not undertake an a priori power analysis, & are uncertain as to whether their study had a good sample size for the tests they ran. What information would they need to determine sample size for a future study (I am not asking for a calculation, just the factors involved)? (20 points)

2.       Similarly, they have historical data that suggests height tends to decrease with age in elderly populations, but would like to analyze this hypothesis more methodically with their results. Run an appropriate test to determine if there is a negative relationship between height & age, & report on the results. (20 points)

3.       A subgroup of the original researchers wants to know if there is a difference between BMI of different racial groups/ethnicities. Run an appropriate test to determine this, & comment on the results. As you will notice from your results, three of the groups are determined to have less than 5 members, so the researchers decide to examine only African American, White & Hispanic groups. Re-run the test & use post-hoc statistics to determine where the difference, if any, arises. Comment on your results.   (30 points)

 

4.       Next year, the researchers come back to their data to look at the relationship between race & marital status. They want to know more precisely how Whites & African Americans compare in their rates of divorce. Using SPSS, calculate the Odds Ratio that compares these two groups in the manner described. Show your results & comment on them. (20 points)

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