Class Frequency ------ 0–10 4 10–20 6 20–30 10 30–40 7 40–50 3 (Classes are continuous: a –b means a le x < b.) The mean of this distribution is:

  1. 26.5
  2. 29.67
  3. 24.67
  4. 25
Answer

C) 24.67

Using midpoints x: sum fx = 740, sum f = 30, so barx = sum fxsum f = 24.67. SLO M-09-C-02 · Understanding

Mathematics MCQ · More Measures of Central Tendency MCQs · Practise