Class Frequency ------ 100–110 8 110–120 14 120–130 20 130–140 10 140–150 8 (Classes are continuous: a –b means a le x < b.) Using Median = l + hf ( n2 - c ), the median is:

  1. 127.33
  2. 124
  3. 130
  4. 120
Answer

B) 124

n = 60, n2 = 30. The median class is 120 –130 with l = 120, h = 10, f = 20, c = 22. Median = 120 + 1020(30 - 22) = 124. SLO M-09-C-02 · Understanding

Mathematics MCQ · More Measures of Central Tendency MCQs · Practise