- number of times more than the average
- the difference from
Use a bar chart to plot deviation from a fixed value, or series of values.
Example of deviation where the value of data is most important
Gross disposable household income (GDHI) per head (£)
Example of deviation where the amount of change is most important
GDHI per head index comparison with England average
Use small multiples to plot deviation for multiple series. The axes should be identical for each small multiple.