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JAMB Mathematics 2011 Question 44

Question 44

Measures of Central Tendency

No.: 0, 1, 2, 3, 4, 5
Frequency: 1, 4, 3, 8, 2, 6
From the table above, find the median and range of the data respectively.

  1. A.(8,5)
  2. B.(3,5)
  3. C.(5,8)
  4. D.(5,3)
Show the answer and explanation

Answer: B ((3,5))

Explanation

There are 24 values. The 12th and 13th values are both 3 (cumulative frequencies 1, 5, 8, 16, ...), so the median is 3. Range = 5 − 0 = 5.