general math MCQ #12065

If Q1 = 20 and Q3 = 50, the interquartile range (IQR) is:

general math MCQ #12065

  1. Question 1

    Q1. If Q1 = 20 and Q3 = 50, the interquartile range (IQR) is:

    • A) 30
    • B) 35
    • C) 25
    • D) 70

    Answer: 30

    Explanation: The interquartile range is Q3 minus Q1: 50 − 20 = 30, measuring the spread of the middle 50% of data.