U.S. Centers for Disease Control and Prevention (CDC) Epidemiologist Statistical Practice Questions
The free U.S. Centers for Disease Control and Prevention (CDC) Epidemiologist questions that deal with statistical, with answers and explanations. The full bank and the timed practice test cover every topic the exam asks about.
Question #4
An epidemiologist is examining the correlation between air pollution levels and asthma rates in urban areas. What statistical method might be most useful here?
Correct answer: B
Explanation
Linear regression analysis can help determine the relationship between two continuous variables, such as pollution levels and asthma rates.
Question #8
An epidemiologist needs to assess the impact of an intervention. What statistical test should they use to compare two groups?
Correct answer: A
Explanation
A T-test is appropriate for comparing means between two groups.
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