1. Maths Improvers Blended Learning1 Types of graphs Level 1 Level 2

2. Maths Improvers Blended Learning2 Why do we use graphs? To display collected information (data) in a visual way Lots of information can be displayed in one graph To make things simpler.

3. Maths Improvers Blended Learning3 What are the most common types of graph? Line graph Bar chart Pie chart Pictogram Scatter graph or scatter plot.

4. Maths Improvers Blended Learning4 Other ways to show data In a list As a tally In a frequency table ChocolateVanillaMintPistachioMelonFudge 884361

5. Maths Improvers Blended Learning5 Line graph

6. Maths Improvers Blended Learning6 Line graph 2

7. Maths Improvers Blended Learning7 Bar chart

8. Maths Improvers Blended Learning8 Cumulative bar chart

9. Maths Improvers Blended Learning9 Comparative bar chart

10. Maths Improvers Blended Learning10 Bar graph 2 showing data for 2 years www.dictionary.laborlawtalk.com/bar_chart

11. Maths Improvers Blended Learning11 Pie Chart

12. Maths Improvers Blended Learning12 So - what does a graph need? A title A label across (the x-axis) A label up the side (the y-axis) Numbers to show amounts (scale) Data plotted

13. Maths Improvers Blended Learning13 Y axis Parts of a line graph or bar chart – the essentials! X axis Label for the y axis Label for the x axis Graph Title

14. Maths Improvers Blended Learning14 So - what does a pie chart need? A title A key (or legend) Data plotted as sectors (slices of the pie)

15. Maths Improvers Blended Learning15 Parts of a pie chart – the essentials! A Key (legend) Sectors

16. Maths Improvers Blended Learning16 So - what does a pictogram need? A title A key (or legend) Minimum labelling (one axis only) Data plotted as graphics

17. Maths Improvers Blended Learning17 A very simple (edible) pictogram!

18. Maths Improvers Blended Learning18 Computer generated pictogram www.kudlian.net

19. Maths Improvers Blended Learning19 So - what does a scatter graph need? A title A label across (the x-axis) A label up the side (the y-axis) Numbers to show amounts Two sets of bivariate data plotted Bivariate data is pairs of information from one source eg height and weight (growth chart)

20. Maths Improvers Blended Learning20 Scatter graph or plot www.gifted.uconn.edu

21. Maths Improvers Blended Learning21 Scatter graph or plot www.graphicsserver.com

22. Maths Improvers Blended Learning22 Which one to use Line graphs Observing trends over time Bar charts Seeing which is most/least Comparing one thing with another Pie charts Parts of a whole Data in percentages

23. Maths Improvers Blended Learning23 Pictogram Potentially non-mathematical Easy to read Can simplify very large numbers Scatter graphs Paired data (height/weight; mileage/age of car; study/test results)

24. Maths Improvers Blended Learning24 Other graphs Frequency polygon A line on a graph joins the midpoints of histogram bars (looks like bar chart and line graph together) www.gseis.ucla.edu

25. Maths Improvers Blended Learning25 Other graphs Block chart Similar to a bar chart – but often simplified. Almost a bridge between bar chart and pictogram www.elvethamheath.hants. sch.uk

26. Maths Improvers Blended Learning26 Useful words Frequency table A table with columns and rows showing the number of times an item or event occurs. http://amazing-space.stsci.edu

27. Maths Improvers Blended Learning27 Useful words Tally, or bar gate A method of recording items using a mark, usually a line or stick. Tallies are recorded in sets of 5 for easy addition. 8

28. Maths Improvers Blended Learning28 Useful words Discrete data: data resulting from a count of separate items or events, e.g. number of people, colours. On a bar chart the bars are separate. Continuous data: data that can take any value e.g. height, temperature and time. On a bar chart the bars are next to each other.

29. Maths Improvers Blended Learning29 Useful words Axis X or horizontal axis Y or vertical axis X Y

30. Maths Improvers Blended Learning30 How are you doing? Think about these questions Do you feel confident with this topic? If you are not confident, re-run the slides. Or look for more on this topic in Section 10: Graphs and Averages

31. Maths Improvers Blended Learning31 Credits: Graphs generated in MS Excel unless stated on slide - See individual slides for URLs/photo credits GNU Free Documentation License Click to exit