JAMB 1988 · UME · Q49

In the distribution below, the mode and the median respectively are

Score (xx) 0 1 2 3 4 5 6
Frequency 7 11 6 7 7 5 3
Worked solution (try it first)
  1. The mode is the score with the highest frequency: score 1, which occurs 11 times.
  2. There are 7+11+6+7+7+5+3=467 + 11 + 6 + 7 + 7 + 5 + 3 = 46 scores, so the median is halfway between the 23rd and 24th.
  3. Running totals: 7 (score 0), 18 (score 1), 24 (score 2).
  4. The 19th to 24th scores are all 2, so the median is 2.
  5. So the mode and median are 1 and 2, option B.

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