The arc length of each section is proportional to the quantity it represents, usually resulting in a shape similar to a slice of pie. Finish up by coloring each sector and giving it a label like "Comedy: 4 (20%)", etc. You can make a pie chart on your computer using an online program or you can draw the pie chart by hand using basic math skills. Entering your pie-chart data To enter […] Step 3 – Draw the Pie Chart Using the Angles: Once you have all the angles, you can then draw a pie chart. The angle of a sector is proportional to the frequency of the data. Drawing a pie chart on the computer is a fantastic experience, at least compared with doing it by hand. Make sure to label all the segments with the names of the beverages and write percentages or angles in degrees inside the slices. The main thing is to enter your data properly. That’s it! This MS PowerPoint demonstrates how to create Pie Charts using a protractor and paper. The example used here is about different makes of car. (And dont forget a title!) This can be used not only to demonstrate to your class, but can also be looped and left on display as a class reminder and helps to reduce the number of questions the class are likely to ask you! Constructing Circle Graphs Or Pie Charts. Now you are ready to start drawing! Steps. A pie chart (also called a Pie Graph or Circle Graph) makes use of sectors in a circle. Next, multiply each percentage by 360 to find the angle between that data point and the next lowest data point. Method 1 of 3: Making a Pie Chart on the Computer ... Divide each section of the pie chart. Another Example. The formula to determine the angle of a sector in a circle graph is: Study the following steps of constructing a circle graph or pie chart: A pie chart is a circular chart that shows how data sets relate to one another. A pie chart is a good chart to choose when displaying data that has stark contrasts. Use the protractor to measure the degrees of each sector. Worked Example # 2 – Transportation: Your pie chart is ready. When you're finished, you can color in each segment of the chart to help differentiate them. Then use your protractor to measure the degrees of each sector. Draw a circle. Finally, use the angles you calculate to draw a pie chart, using a protractor to measure each angle. It takes seconds, and you don’t have to remember how to use a protractor or worry about getting your angles wrong.
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