Distributions

    Cards (9)

    • whats a distribution
      graphs used to show how evenly data is spread
    • whats a normal distribution
      symmetrical bell-shaped curve
      mean, mode & median are the same mid-point
      most people are in the middle, with a few in extreme areas
    • whats a skewed distribution
      bell-shaped curve which isn't symmetrical, data clusters to one end
    • whats a positive skewed distribution
      concentrated towards the left of the graph
      mode is highest point, median next & mean is furtherest along
    • what an example of a positive distribution
      a hard test were most got low marks
    • whats a negative skewed distribution
      concentrated towards the right of the graph
      mean is lowest, median is the middle & mode is the highest point
    • whats an example of a negative distribution
      an easy test were most got high marks
    • how do we know if theres a positive distribution
      mode is lower than the mean
    • how do we know if theres a negative distribution
      mode is higher than the mean
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