Given first quartile Q₁ = 18 and third quartile Q₃ = 34, find the IQR.
Direct Answer: Interquartile Range (IQR) is defined by: 16. IQR = Q₃ - Q₁ = 34 - 18 = 16. It quantifies the spread of the middle 50% of values.
Detailed Step-by-Step Explanation:
IQR = Q₃ - Q₁ = 34 - 18 = 16. It quantifies the spread of the middle 50% of values.