GCSE Maths (Edexcel)

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Mean from Frequency Tables

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Statistics Statistics

Mean from Frequency Tables

3:44 Mean & Averages
Spec S2 S4
Previous Mean Next Measures of Central Tendency
  • The method for calculating a mean can be adapted for frequency tables by multiplying each data value by its frequency to find the total
  • A frequency table tells us the number of times a given data value appears in a set
  • To calculate the mean, sum all of the data values and then divide by the total number of data
  • To round the mean to one decimal place, look at the second decimal place and round up if it's 5 or more
  • Multiply each data value by its frequency to find the total for each row of the table
  • Add these totals together to find the sum of the data values
  • Add all the frequencies together to find the total number of data values
  • Divide the sum of the data values by the total number of data values to calculate the mean
  • Round the mean to one decimal place by looking at the second decimal place and rounding up if it's greater than 5

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