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JAMB Mathematics 1979 Question 1

Question 1

Measures of Central Tendency

The mean of the numbers 1.2, 1.0, 0.9, 1.4, 0.8, 0.8, 1.2 and 1.1 is.

  1. A.1.5
  2. B.0.8
  3. C.1.0
  4. D.1.02
  5. E.1.05.
Show the answer and explanation

Answer: E (1.05.)

Explanation

The eight numbers add up to 8.4, and 8.4 ÷ 8 = 1.05.