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Here is a bar graph to show the average rainfall for every month of the year in Rome, Italy, and London, England:
Example
What is the difference in rainfall between Rome and London in January?
Answer
10 mm
We can see that the blue line for Rome is just under 50 mm and the orange line for London is just under 60 mm in January.
We can make an educated guess that Rome has 49 mm in January and London has 59 mm.
59 mm - 49 mm = 10 mm
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Let's get started and have a go at answering some more comparison questions about this bar chart.
