A circle graph is usually used to easily show the results of an investigation in. If that means drawing a different Black Eyed Pea inside each one, so be it. A circle graph, or a pie chart, is used to visualize information and data. The important thing is to be able to tell the slices apart. If you're making pie charts and you don't have different-colored writing utensils handy, instead of making the pizza slices different colors you can just label each slice with the thing it represents. If, on the other hand, one of your special skills is the ability to replicate classic works of art on the head of a pin, you may have no need for a key. It may not be necessary in this example, but sometimes you'll have super-duper thin slices, so it's a good idea to get some practice. We could instead have a key that explains what each color means.
In this graph, we colored each individual slice of the graph with the backpack color it represented. We can represent this by the following circle graph: Half the backpacks are red, one quarter are blue, and one quarter are green. Red, blue, red, red, red, blue, green, green Suppose students had the following colors of backpacks: Thinking about backpacks helps us get to our happy place, so we'll do so once again. Our advice is not to invite too much data to your house when you're throwing a party, so that you can keep most of the pizza for yourself. Each portion is represented as a percentage of the whole circle. If one-eighth of the data falls into one category, its corresponding slice will be one-eighth of the pizza, and so on. graphs: A circle is divided into smaller portions. If half the data (50%) falls into one category, its corresponding slice will be half (50%) of the pizza. Yeah, it would probably make more sense if we went with a "pie" analogy, but where's the fun in being predictable? To make a pie chart, we start with a circle and cut it into slices like a pizza. It makes sense that these graphs are useful for displaying categorical data. Pie Charts, also known as circle graphs, are ways of displaying the proportions, or percentages, of data that fall into different categories.