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)
Maths Improvers Blended Learning20 Scatter graph or plot
Maths Improvers Blended Learning21 Scatter graph or plot
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
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)
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)
Maths Improvers Blended Learning25 Other graphs Block chart Similar to a bar chart – but often simplified. Almost a bridge between bar chart and pictogram sch.uk
Maths Improvers Blended Learning26 Useful words Frequency table A table with columns and rows showing the number of times an item or event occurs.
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
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.
Maths Improvers Blended Learning29 Useful words Axis X or horizontal axis Y or vertical axis X Y
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
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