JAMB 1983 · UME · Q17

The scores of a set of final-year students in a paper are 41, 29, 55, 21, 47, 70, 70, 40, 43, 56, 73, 23, 50, 50. Find the median of the scores.

Worked solution (try it first)
  1. Put the 14 scores in order: 21, 23, 29, 40, 41, 43, 47, 50, 50, 55, 56, 70, 70, 73.
  2. With an even number of scores, the median is halfway between the 7th and 8th: 47 and 50.
  3. So the median is 47+502=4812\frac{47 + 50}{2} = 48\frac12, option B.

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