Data Presentation


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Data Presentation

  1. 1. Data Presentation How to achieve a level 3 on your GCSE coursework for data presentation.
  2. 2. Lesson objectives <ul><li>To appreciate how more complex data presentation techniques enable you to access level 3 of the AQA mark scheme. </li></ul><ul><li>To produce techniques such as pictogram s to show changes in the street quality from the Promenade to further inland. </li></ul><ul><li>To recognise patterns created by the pictograms and to be able to analyse them in detail. </li></ul>
  3. 3. Data presentation <ul><li>The examiner will be looking for: </li></ul><ul><li>The use of a range of more complex data presentation techniques, some of which are ICT based , to present and develop information. </li></ul><ul><li>Techniques that are appropriate to your investigation </li></ul><ul><li>The use of a clear , fluent and logical format using precise and accurate English. </li></ul>
  4. 4. <ul><li>Graphs….. </li></ul><ul><li>Use a range of graphs (not just pie charts or bar charts). Proportional graphs are a good technique. </li></ul><ul><li>Consider divided bar graphs, scatter graphs or multiple line graphs. </li></ul><ul><li>Try combining graphs with maps. </li></ul><ul><li>Ensure that the graphs are appropriate for the data you have collected- particularly regarding line graphs. </li></ul><ul><li>If you use ICT don’t go OTT with fancy 3D effects. A graph produced on ICT is not necessarily a complex technique </li></ul><ul><li>Common mistakes…. People forget to label axes, fail to state units of measurement, no titles. </li></ul><ul><li>Graphs can be annotated to point out trends and anomalies. </li></ul>
  5. 5. <ul><li>Statistical techniques and others.. </li></ul><ul><li>There is a range of simple statistical techniques that you can use such as mean, median and mode. </li></ul><ul><li>You may want to use these when writing about the overall trends of results. </li></ul><ul><li>Use neat ordered tables for data. </li></ul><ul><li>Flow lines are also a good presentation technique when used appropriately. </li></ul>
  6. 6. <ul><li>Pictograms </li></ul><ul><li>A pictogram is an attractive way of displaying data. Instead of using a bar or a pie chart you can use pictures. </li></ul><ul><li>Question 1 </li></ul><ul><li>50 children were asked which method of transport they used to travel to school. The results are given below: </li></ul><ul><li>Bus 18 Train 7 Car 8 Walk 14 Other 3 </li></ul>
  7. 7. But it is very easy to make fundamental mistakes with pictograms….. Remember a pictogram should always have a key. In the example above the key shows that each stickman represents 2 people.     
  8. 8. <ul><li>On this pictogram there isn't a category for those people who do not own a pet. The pictures are different sizes and it appears that more people own a horse than any other animal. </li></ul>The graph is therefore misleading..
  9. 9. <ul><li>An improvement would be to redraw the pictogram with each of the animals the same size and aligned with one another like this </li></ul>
  10. 10. Examples of Pictograms
  11. 11. Another Easy mistake… <ul><li>Take care with scale… </li></ul><ul><li>If your scale scores HIGHER for a BETTER environment it would be unsuitable to draw, for example, litter bins that are full of rubbish as it would give the wrong impression! </li></ul>
  12. 12. <ul><li>How can I draw pictograms in Excel? </li></ul><ul><li>Excel is great for drawing pictograms! First of all draw a simple Column chart of your data. Right-click on one of the columns (bars) on your chart. Choose F o rmat Data Series then Patterns + Fill Effects + Picture + Select Picture. You now need to find some clipart - there are usually lots within the msoffice folder. Select your picture and then OK. A &quot;stretched&quot; picture will have replaced each bar. If you retrace your steps you will see that you can have &quot;stacks&quot; of pictures instead. </li></ul><ul><li>  </li></ul>