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JAMB Mathematics 1999 Question 49

Question 49

Measures of Central Tendency

Marks: 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10
No. of Students: 2, 2, 11, 10, 16, 51, 40, 10, 25, 15, 20
The marks scored by students in a test are given in the table above. Find the median.

  1. A.7
  2. B.6
  3. C.5
  4. D.4
Show the answer and explanation

Answer: B (6)

Explanation

There are 202 students, so the median lies between the 101st and 102nd. The cumulative frequency is 92 up to mark 5 and 132 up to mark 6, so the median mark is 6.