In a box plot, the "interquartile range" (IQR) represents: A The full range of data B The middle 50% of data C The mean of the data D The top 25% of data ✓ Correct Answer: Option B IQR = Q3 − Q1, which captures the middle 50% of the data distribution. Practice ACT Exam Prep Quizzes → Browse All Questions Study Flashcards