GCSE Maths (AQA)

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Median from Frequency Tables

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Statistics Statistics

Median from Frequency Tables

6:12 Median, Mode & Range
Spec S2 S4
Previous Median Next Mode
  • The method for calculating a median can be adapted for frequency tables by counting the frequencies until we find the middle value.
  • A frequency table gives the number of times a specific value appears within a set of data.
  • The position of the median is given by the formula: number of data values plus one divided by 2.
  • The total frequency is found by adding together all of the individual frequencies.
  • The median score is the value corresponding to the frequency that took us beyond the median position.
  • If the position of the median is a non-whole number, the median can be between two rows of the table, in which case it is the mean of the values for those two rows.
  • For grouped data, we can only determine the group that the median will be in, not the specific individual value.

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