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WAEC Further Mathematics 2012 Question 18

Question 18

Statistics

The marks obtained by 10 students in a test are as follows: 3, 7, 6, 2, 8, 5, 9, 1, 4 & 10. Find the mean mark

  1. A.4.50
  2. B.5.50
  3. C.6.50
  4. D.6.75
Show the answer and explanation

Answer: B (5.50)

Explanation

The marks add up to 55, so the mean is 55 ÷ 10 = 5.50.