This worksheet teaches students to choose the clearest display for data, describe its shape and spread, and spot graphs that give a misleading picture. The worksheet is split into warm-up questions, standard questions and then extension questions to test you.
The concepts it covers:
- Different displays suit different jobs. A dot plot shows every value; a column graph compares totals; a pictograph is quick to read but can need part symbols.
- The shape of data describes where the values bunch up and where they spread out.
- Variation is how spread out the data is. Data bunched close together has little variation.
- A graph can mislead if its scale does not start at 0.
What your child will practise:
- Reading and describing dot plots.
- Comparing the spread (variation) of two data sets.
- Choosing the best display for a purpose.
- Spotting misleading graphs, including how to fix them.
- Finding unusual values in data.
Every section opens with a worked example, and the download includes a full answer key with step-by-step solutions and teaching notes on the mistakes students most commonly make.
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