passwella.
Menu

JAMB Mathematics 1981 Question 30

Question 30

Measures of Central Tendency

Marks scored by some children in an arithmetic test are 5,3,6,9,4,7,8,6,2,7,8,4,5,2,1,0,6,9,0,8. The arithmetic mean of the marks is

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

Answer: B (5)

Explanation

The 20 marks add up to 100, so the mean is 100 ÷ 20 = 5.