Class Frequency ------ 40–50 3 50–60 12 60–70 15 70–80 6 80–90 4 (Classes are continuous: a –b means a le x < b.) Using Median = l + hf ( n2 - c ), the median is:

  1. 70
  2. 60
  3. 67
  4. 63.33
Answer

D) 63.33

n = 40, n2 = 20. The median class is 60 –70 with l = 60, h = 10, f = 15, c = 15. Median = 60 + 1015(20 - 15) = 63.33. SLO M-09-C-02 · Understanding

Mathematics MCQ · More Measures of Central Tendency MCQs · Practise