Question

question 6 (6 points)
question: a team of scientists wants to investigate the impact of climate change on the migration patterns of a specific bird species. they tag the birds and monitor their migration habits for 5 years. what study design is this?

1. ecological
2. cohort
3. experimental
4. case - control

question 7 (6 points)
question: you are working with the judicial system to determine if there are racial disparities in arrests rates. you collect all the arrest records for the last five years, and group them according to the race of the defendant to determine if racial disparity among arrests exists. what type of study is this?

1. case - control
2. cohort

Explanation:

• Question 6: A cohort study follows a group (in this case, the tagged birds) over time (5 years) to observe outcomes (migration patterns affected by climate change). An ecological study looks at group - level data (not individual tracking like tagging birds). An experimental study would involve intervention (not just monitoring). A case - control study starts with outcomes and looks back.
• Question 7: This is a case - control study. It starts with the "cases" (arrests) and looks at the exposure (race of the defendant) retrospectively (using past 5 - year records). A cohort study would follow a group forward in time.

Answer:

• Question 6: 2) Cohort
• Question 7: 1) Case - control