ATI RN
Descriptive Epidemiology Questions Questions
Question 1 of 5
The mode is the value that:
Correct Answer: B
Rationale: The mode is the most frequently occurring value in a dataset.
Question 2 of 5
Recommended methods for creating categories for continuous variables include: (Choose one wrong answer)
Correct Answer: A
Rationale: Quantiles (B), equal intervals (C), and standard categories (D) are common. Mean and SD (A) are less typical for categorization.
Question 3 of 5
When creating a bar chart, the decision to use vertical or horizontal bars is usually based on:
Correct Answer: D
Rationale: Bar orientation is a design choice, often driven by label readability.
Question 4 of 5
Evaluating and improving surveillance should address which of the following? (Choose one wrong answer)
Correct Answer: C
Rationale: Evaluation focuses on purpose (A), resources (B), and quality (D). Control effectiveness (C) is an outcome, not a surveillance focus.
Question 5 of 5
Why should an investigator who has no clinical background nonetheless talk to a patient or two as an early step in the outbreak investigation? (Choose one wrong answer)
Correct Answer: A
Rationale: Talking to patients helps generate hypotheses (B) and understand symptoms (C). Advising (A) requires clinical expertise.