Dispersion

Cards (7)

  • What are the measures of dispersion?
    Range
    Standard deviation
  • What is the range?
    The difference between the highest and lowest numbers
  • What are the strengths of the range?
    Quick and easy to calculate
  • What is the weakness of the range?
    Affected by outliers, doesn’t take into account all the values
  • What is the standard deviation?
    Tells us the average distance of each score from the mean
  • What are the strengths of standard deviation?
    More precise measure of dispersion
  • What are the weaknesses of standard deviation?
    Much harder to calculate than the range