GCSE Maths (Edexcel)

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Pictograms

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Statistics Statistics

Pictograms

5:13 More Statistical Charts
Spec S2 S4
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  • A pictogram is a diagram that represents frequencies in a set of discrete data using images
  • Discrete data is data that can only take certain values or be sorted into certain categories
  • The number of data values in each category is called the frequency
  • Pictograms help visualize the different frequencies
  • A key is given with the diagram to show what frequency each picture represents
  • Partial pictures represent a fraction of the frequency
  • The image choice in an exam question will make it fairly obvious what fraction is being represented
  • To construct a pictogram, determine the number of whole images needed and then the portion of a partial image needed
  • Example: drawing a pictogram using a given key and data table
  • Step 1: Determine what a quarter of a circle represents
  • Step 2: Calculate the number of full circles for each category
  • Step 3: Use remainders to determine the number of partial circles for each category
  • Step 4: Draw the calculated numbers of full and partial circles for each category

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