JAMB Mathematics 1981 Question 31

Question 31

Measures of Central Tendency

The weights of 30 new-born babies are given as follows: 6,9,5,7,6,7,5,8,9,5,7,5,8,7,8,7,5,6,5,7, 6,9,9,7,8,8,7,8,9,8. The mode is

  1. A.6
  2. B.5
  3. C.8
  4. D.7
  5. E.10.
Show the answer and explanation

Answer: D (7)

Explanation

Counting: 5 appears 6 times, 6 four times, 7 eight times, 8 seven times and 9 five times. 7 is the most frequent.