Multiple choice general knowledge

The inter-quartile range is defined to be

  1. Q1 - Q3

  2. Q3 - Q1

  3. (Q1 - Q3)/2

  4. (Q3 - Q1)/2

Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

The inter-quartile range (IQR) measures the spread of the middle 50% of data. It is calculated as Q3 (75th percentile) minus Q1 (25th percentile), representing the range between the upper and lower quartiles.