ATI RN
Epidemiology Practice Questions Questions
Question 1 of 5
Which of the following are considered measures of spread? (Choose one wrong answer)
Correct Answer: B
Rationale: IQR (A), range (C), and standard deviation (D) measure spread. Percentiles (B) indicate position, not spread.
Question 2 of 5
A frequency polygon differs from a line graph because a frequency polygon:
Correct Answer: A
Rationale: Frequency polygons represent distributions, while line graphs show trends over time.
Question 3 of 5
Data collected through which of the following methods is commonly used for surveillance? (Choose one wrong answer)
Correct Answer: B
Rationale: Vital records (A), notifications (C), and surveys (D) are surveillance staples. Trials (B) are for research, not routine surveillance.
Question 4 of 5
Initiating surveillance for a public health problem or adding a disease to the notifiable disease list is justified for which of the following reasons? (Choose one wrong answer)
Correct Answer: C
Rationale: High fatality (A), novelty (B), and program needs (D) justify surveillance. CDC recommendation (C) supports but isn’t a primary reason.
Question 5 of 5
Descriptive epidemiology is essential for “characterizing the outbreak” by time, place, and person, but has little bearing on the analytic epidemiology.
Correct Answer: B
Rationale: Descriptive epidemiology provides data that inform analytic studies.