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JAMB Mathematics 1983 Question 28

Question 28

Measures of Central Tendency

The score of 16 students in a Mathematics test are 65, 65, 55, 60, 60, 65, 60, 70, 75, 70, 65, 70, 60, 65, 65, 70. What is the sum of the median and modal scores?

  1. A.125
  2. B.130
  3. C.140
  4. D.150
  5. E.137.5.
Show the answer and explanation

Answer: B (130)

Explanation

65 occurs most often (6 times), so the mode is 65. In order, the 8th and 9th scores are both 65, so the median is 65. The sum is 130.