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Average, or spread?

Exercise and reference answers

Items
  1. Item
    Mean
    Category
    An average
  2. Item
    Median
    Category
    An average
  3. Item
    Describes where the data centres
    Category
    An average
  4. Item
    Range
    Category
    A spread
  5. Item
    Standard deviation
    Category
    A spread
  6. Item
    Describes how scattered the data is
    Category
    A spread
Categories
  1. Item
    An average
  2. Item
    A spread

Explanation

An average says where the data sits a measure of dispersion says how scattered it is. Data-interpretation questions ask for both and they are not interchangeable. Source: syllabus Maths, Ch 13 Statistics.
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