pie charts are distributions of data. they are to show a clear proportion of a particular data.
lets see an example
the table below shows the choices of students in a school
we are said to make a pie chart
firstly we will find out the total of all the numbers
400+340+160+100
= 1000 students
then we will continue the process by working out the angle of every field
as we all know the complete angle is of 360 degrees
so the angle of each data will be said to be out of 360 degrees
angle= no of students in field/total no of students
400/1000*360 degrees= 144 degrees{out of 360 degrees}
next , 340/1000*360= 122.4 degrees
160/1000*360= 57.6 degrees
100/1000*360= 36 degrees
to check ur angles just add all the angles.{total expected to be 360 degrees}
and now proceed towards the pie chart
1.draw a circle and a radius inside it and take a protractor
2.put the protractor on the radius and draw a straight line towards the point where 144 degree angle lies
that will be the Ist quarter {cricket}
3. then put the protractor on the new line and draw an angle of 122.4 degress
4.and then go on drawng these angles and ur pie chart is ready
Sport | cricket | hockey | badminton | tennis | | | |
No of students | 400 | 340 | 160 | 100 | | | |