Reading Graphs

Look carefully at this graph. Look at all parts of the graph to help you work out what it says. 

Units are items that have been sold that month. For example: each unit could be a laptop computer. 

Questions: 

In which month did they sell the most units?

Which month did they sell the least units?

How many units did they sell in Oct? - have a good guess as it is not totally clear.

Which were the best 3 months for sales of units?

Why do you think they sold so many units in December?

Which months did they sell the same amount of units?