GCSE Maths (AQA)

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Range

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Statistics Statistics

Range

5:10 Median, Mode & Range
Spec S4
Previous Mode Next Outliers
  • A measure of spread describes how varied the values in a data set are
  • Measures of central tendency (mean, median, mode) describe the center of a data set
  • It is best to include both a measure of central tendency and spread when summarizing a data set
  • The range is a measure of spread given by the difference between the greatest and smallest values in a data set
  • The range is useful for quantitative data, but not for qualitative data
  • The range can be calculated by subtracting the smallest value from the greatest value
  • The range can also be deduced from a frequency table or a vertical line graph
  • Range questions in exams may involve tables or charts to test understanding of different ways of presenting data

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