Class Frequency ------ 10–20 5 20–30 8 30–40 12 40–50 9 50–60 6 (Classes are continuous: a –b means a le x < b.) Using Median = l + hf ( n2 - c ), the median is:

  1. 30
  2. 38.75
  3. 40
  4. 35.83
Answer

D) 35.83

n = 40, n2 = 20. The median class is 30 –40 with l = 30, h = 10, f = 12, c = 13. Median = 30 + 1012(20 - 13) = 35.83. SLO M-09-C-02 · Understanding

Mathematics MCQ · More Measures of Central Tendency MCQs · Practise