MathProblem-Solving & Data Analysis
Practice
Data Analysis Practice
Original questions reading displays and evaluating conclusions from data.
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Question 1 of 2
Question 1
Medium
Correct answer\(6\)
Explanation
Percentage-point change is subtraction: \(30-24=6\) percentage points.
Question 2 of 2
Question 2
Hard
Correct answerExercise and reported concentration are associated, but the survey alone cannot establish causation.
Explanation
The survey establishes an association. Without random assignment or stronger causal evidence, direction and possible confounding variables remain unresolved.
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Questions to review
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- Question 1Interpret percentage-point changeMedium
- Question 2Evaluate a conclusion drawn from observational dataHard