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JAMB Mathematics 1978 Question 31

Question 31

Measures of Central Tendency

In a soccer competition in one season, a club had scored the following goals: 2,0,3,3,2,1,4,0,0,5,1,0,2,2,1,3,1,4,1 and 1. The mean, median and mode are respectively

  1. A.1, 1.8 and 1.5
  2. B.1.8, 1.5 and 1
  3. C.1.8, 1 and 1.5
  4. D.1.5, 1 and 1.8
  5. E.1.5, 1.8 and 1.
Show the answer and explanation

Answer: B (1.8, 1.5 and 1)

Explanation

The 20 scores add up to 36, so the mean is 1.8. In order, the 10th and 11th scores are 1 and 2, so the median is 1.5, and 1 occurs most often (6 times).