This document provides instructions for making a pie chart in two methods: using a sample pie chart or making your own from raw data. It describes the 10 steps to make a pie chart from raw data, which includes gathering the data, calculating percentages, determining slice angles, drawing the circle, dividing it into segments using a protractor, and coloring the segments to visualize the results. Pie charts are useful for displaying proportional data in an easy to understand visual format.

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Crystalene Joy Serrano 7- SPSTE
How to make pie graph
Two Methods:Sample Pie ChartMaking Your Own Pie Chart
Pie charts are a form of an area chart that are easy to understand with a quick look.
They show the part of the total (percentage) in an easy-to-understand way. Pie charts
are useful tools that help you figure out and understand polls, statistics, complex data,
and income or spending. They are so wonderful because everybody can see what is
going on. Use them to make excellent visual displays that explain data to other people--
in school projects, work presentations or pitching sales figures to clients.
Sample Pie Chart

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Sample Pie Chart About Time
Making Your Own Pie Chart
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Gather your numerical data and label information and write it down with one data
point per line, in descending order.

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Add the data all together calculate the total. This number will be your denominator.
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Calculate the percentage of the total for each data point by dividing each one by
the denominator (total) calculated above.
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Calculate the angle between the two sides of each pie slice. To do this, multiply
each percentage (still in decimal form) by 360.
 The logic behind this is that there are 360 degrees in a circle. If you know that 14,400 is
30 percent of the whole (or 0.30), then you're calculating 30% of 360 which is 108.
 Check your work. Add up the number of degrees you calculated for each data point.
They should total 360. If not, you've missed something and should double-check your
work.
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Use a mathematical compass to draw a circle. To draw a pie chart accurately, you
need to start with a perfect circle. This can be done using a compass (and a protractor
to measure the angles). If you don't have a compass, try tracing around a circle
template, using something round such as a lid or a CD.
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Draw the radius. Start in the exact center of the circle and draw a straight line to the
outside of the circle. (Hint: make a dot with the compass to find the center.)
 The straight line can be vertical (12 or 6 o'clock on the clock face) or horizontal (9 or 3
o'clock on the clock face). The segments you create then follow either a clockwise or
counter-clockwise sequence.
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Place your protractor on the circle. Position it on the circle so that the 90 degrees
crosshair is situated directly above the center of the circle. The zero point should be
vertically aligned along the vertical plot line.
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Draw each section division. Draw the sections by marking the first division against the
edge of the protractor at the correct angle, using the angle formulations you got in the

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earlier step. Each time you add a section, the radius changes to the line you just drew;
rotate your protractor accordingly.
 When marking the angle lines, make sure they are sharp and fine, to keep them clear
and easy to see.
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Color each segment. You can use color, patterns or just words, depending on what
meets your purpose best. Add the name of each section and the percent it represents in
the chart.
 Color each section of the pie chart a different color/pattern to easily visualize the results.
 If you drew everything in pencil first, always ink in the circle before coloring in any of the
segments. This is because the circle is the trickiest part to draw accurately.
 Labels or words added to each segment should be written horizontally and centered
(the same visual distance from the edge for each segment). This makes them easier to
read.