1. GCSE Statistics
Time Series

2. points are joined with a dotted line
A line graph is used to display data when the two variables are not related by an equation and it is uncertain what happens between the points.
points are joined with a dotted line
scales do not have to start from zero

3. A time series is a set of observations taken over a period of time
A line graph can be used to show a time series.
When plotting a time series. time is plotted on the horizontal (x) axis.
if a question says quarterly it means every 3 months
give comments on the graphs in context. ‘Sales of ice cream seem to be on the increase each year.’
The temperature reached a maximum at 1600

4. Yes that is all there is to it!
Your Turn
exercise 6A page 210
exercise 6B page 213
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