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WAEC Biology 2008 Question 48

Question 48

Variation

Which of the following human traits in a class of school children may give an approximate normal distribution curve when the variation is plotted?

  1. A.Blood groups
  2. B.Ear shapes
  3. C.Sex distribution
  4. D.Heights.
Show the answer and explanation

Answer: D (Heights.)

Explanation

Height varies continuously, so a plot gives a bell-shaped normal curve.