GCSE Maths (Edexcel)

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Comparing Data Sets

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Statistics Statistics

Comparing Data Sets

5:41 Analysing Data
Spec S4 S5
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  • Comparing datasets is a common type of GCSE question
  • When comparing datasets, it is useful to look at notable differences in frequencies and proportions
  • Pie charts can show the proportion of different categories in a dataset
  • Comparisons can be made between very large and very small values, as well as values that change a lot or don't change at all
  • Highest and lowest values can be compared between datasets
  • Calculating and comparing averages (mean, median, mode) can provide information about central tendency
  • The range of the data (difference between largest and smallest values) can be compared
  • The spread or distribution of data values within the range can be compared
  • Comparisons can be made between whether values are generally large or small
  • Usually, two to three key points are enough for a comparison question, based on the number of marks available.

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