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JAMB Economics 2010 Question 5

Question 5

Tools of Economic Analysis

The standard deviation of a set of data is

  1. A.always measured from the mode
  2. B.the most representative of averages
  3. C.always measured from the median
  4. D.a measure of dispersion.
Show the answer and explanation

Answer: D (a measure of dispersion.)

Explanation

Standard deviation measures how widely the values spread around the mean, so it is a measure of dispersion, not an average.