GCSE Maths (AQA)

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Comparing Mean, Median & Mode

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Statistics Statistics

Comparing Mean, Median & Mode

6:41 Analysing Data
Spec S4 S5
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  • Measures of central tendency give an average or central value from a set of data.
  • The choice of measure of central tendency depends on the properties of the data set.
  • The mean considers all values and is the most frequently used measure of central tendency.
  • The mean can be affected by outliers, extreme values far greater or smaller than the rest of the data.
  • The median is the middle value of the data set and is not affected by outliers.
  • The median may not be an actual value if there is an even number of data values.
  • The mode is the most frequently occurring value and can be used for qualitative data.
  • There can be multiple modes in a data set, and they may not be central.
  • There may be no mode if no data value appears more than once.
  • The mode is best used when the data has many values close to the average and few far away.

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