178 ◆AUTHORING A PHD
Respondents saying government is
doing a good job (%)
Month of the year
Smoothed ‘good job’ % ‘Good job’
(f) Line graph
Proportion of the UK survey respondents seeing
their governments as doing a good job in 2001
Use a line graph chart whenever:
- you have continuous over-time data.
Don’t use line graph charts if:
- the data are over-time but are not really continuous;
- you have very few observations: in both these cases
use a vertical bar chart.
Points to watch:
- if you have more than one line, make sure that they
are each visible.