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### Course: Grade 7 math (FL B.E.S.T.)>Unit 8

Lesson 6: Circle graphs

# Reading pie graphs (circle graphs)

Reading Pie Graphs (Circle Graphs). Created by Sal Khan and Monterey Institute for Technology and Education.

## Want to join the conversation?

• Are there other ways to graph besides pie graphs, bar graphs, line graphs and the like, I am interested in the subject? I know there one really cool way of graphing at http://resourcetepee.com/ and I think it's neat (the site is really cool about graphs)
• you can also practice with pictographs, histograms and stuff. i like pictographs cuz they're really fun!
• Can it be split into diffrent 25%
• Yes, because it may be split in different ways or in the same way.
• what is the total of a pie graphs
• No, really the sum depends on the problem but if you simplify the result is 100% alway... I'm 100% sure
• How would we interpret the pie chart if the question came like this? :
"We have asked 90 people about their favourite football location. Their answers were : Southern England = 144 degrees, Northern England = 96 degrees, London = 32 degrees and Midlands = 88 degrees. How many people like each of the country?"
• 1. Find out that how many degrees does 1 person takes in the graph (360/90=4)
2. Find out how many people in each category/buckets/bins (for example, to find out how many people like Southern England as a football location, we take the degrees of people that likes Southern England as a football location, which is 144 degrees, divide by the number of degrees that 1 person takes in this graph, which is 4, then the quotient is 144/4=36. (Sorry if this is too long)
• What happens when you are doing a pie chart of really bigger numbers?
• It does not matter how big the numbers are, all that matters is the proportion of the numbers and the way you divide the circle to make your pie chart
• what do the colors stand for
• The colors basically to make the graphs easier to visualize and interpret the data, and it's important to color it correctly, if not then it won't be as easy to visualize the data. So it does have a pretty significant role in the pie charts

Ps: My name is a tank
• i love math
• Can you make a video of how to make Pie Graphs
• Why are they even called pie graphs?
(1 vote)
• Because the graph is round which looks like a pie, have different parts which looks like a pie slice so we call it pie charts.