Explaining and comparing a chart
The above chart shows the monthly food and drink sales in the Keighley cinema during 2010. The chart shows unit sales. As you can see, there are three lines on the chart. The sales of popcorn is represented by the green line. The blue line represents drinks. The red line represents ice cream.
The chart demonstrates that drinks are by far the biggest type of food and drink sold in the cinema throughout the year.
The chart also shows that there is a correlation between popcorn sales and drinks. When popcorn sales rise, there is also a rise in the sales of drinks. This trend supports the theory that people drink more when they eat food that contains a lot of salt. During the summer, sales of drinks and popcorn showed a steady increase, by contrast, unit sales of ice cream actually fell slightly. In fact, sales of ice cream fell from April to July, falling from 1025 units to 821 units per month respectively. These result would seem to contradict the idea that people consume more ice cream during summer, because as we can see from the results there is no link.
Lastly, the results indicate that during the Christmas period of December to January, people are willing to spend more money. Sales of all three types of products went up during the period. But this could be due to a general increase in attendance at that time of year.'
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