Class Frequency ------ 20–25 2 25–30 9 30–35 14 35–40 11 40–45 4 (Classes are continuous: a –b means a le x < b.) Using Median = l + hf ( n2 - c ), the median is:

  1. 35
  2. 36.25
  3. 30
  4. 33.21
Answer

D) 33.21

n = 40, n2 = 20. The median class is 30 –35 with l = 30, h = 5, f = 14, c = 11. Median = 30 + 514(20 - 11) = 33.21. SLO M-09-C-02 · Understanding

Mathematics MCQ · More Measures of Central Tendency MCQs · Practise