How to make a Pie Chart

 Steps to make pie chart

 A pie chart is very useful to reflect a set of data in an attractive presentation or other places where the details of the data set are not so important.

The greatest utility of Pie chard comes in the comparison of different data points as a percentage of a whole. Because of its limited dimension, it is used more in business than technical applications.

Most spreadsheet programs like Excel are equipped with the ability to create a pie charts, but it is easy to do by hand for small sets of data. This is especially effective when done on a Smart board in front of the class.

Instructions

Required Tools

Compass

Protractor

Ruler or straight edge

Calculator (optional)

Convert Your Data

Step-1. Convert all of your data into the percentages of the whole data set. For example, four Mango, three apples, two Banana and one Orange.It is equals 40 percent Mango, 30 percent Apples, 20 percent Banana and 10 percent Orange.

Step-2.Convert the percentages into angles. Since a full circle is 360 degrees, multiply this by the percentages to get the angle for each section of the pie. For the Mango, 0.4 X 360 = 144 degrees. For the Apple, 0.3 X 360 = 108 degrees. For the Banana, 0.2 X 360 = 72 degrees. For the Orange, 0.1 X 360 = 36 degrees.

Step-3. Make sure the angle calculations are error free by adding all the angles. The total should be 360. 144 + 108 + 72 + 36 = 360.

Step-4.Drawing method of  the Chart

ONE-Draw a circle on the paper, using the geometric compass. While a compass is not necessary, using one will make the chart much neater and clearer by ensuring the circle is even.

TWO-Draw the radius, from the center to the right edge of the drown circle, using the ruler or straight edge. This will be the first base line.

THREE-Plot the largest angle in the data with the help of protractor, starting at the baseline, and mark it on the edge of the circle.

Utilize the ruler to draw another radius to that point and use this new radius as a base line for your next largest angle and continue this process until you get to the last data point. One will only need to measure the last angle to verify its value since both lines will already be drawn.

FOUR- Label and shade the emerged sections of the pie chart to highlight whatever data are important.