Represent the following data by a pie-diagram:
|Items of expenditure||Expenditure|
|Family A||Family B|
Central angle of a component = (component value/sum of component values x 360)
Here the total expenditure of family A = 10000 and family B = 11680
Thus the central angle for each component can be calculated as follows:
|Item||Expenditure (Family A)||Sector angle (Family A)||Expenditure
|Food||4000||4000/10000 x 360 = 144||6400||6400/11680 x 360 = 197.3|
|Clothing||2500||2500/10000 x 360 = 90||480||480/11680 x 360 = 14.8|
|Rent||1500||1500/10000 x 360 = 54||3200||3200/11680 x 360 = 98.6|
|Education||400||400/10000 x 360 = 14.4||1000||1000/11680 x 360 = 30.8|
|Miscellaneous||1600||1600/10000 x 360 = 57.6||600||600/11680 x 360 = 18.5|
Total expenditure of family A: 10000
Total expenditure of family B: 11680 (not 16000)
Now, the pie chat representing the given data can be constructed by following the steps below:
Step 1 : Draw circle of an appropriate radius.
Step 2 : Draw a vertical radius of the circle drawn in step 1.
Step 3 : Choose the largest central angle. Here the largest central angle is 144o. Draw a sector with the central angle 144o in such a way that one of its radii coincides with the radius drawn in step 2 and another radius is in its counter clockwise direction.
Step 4 : Construct other sectors representing the other items in the clockwise sense in descending order of magnitudes of their central angles.
Step 5 : Shade the sectors with different colours and label them, as shown as in figure below.\
Video Tutorials For All Subjects
- Circle Graph Or Pie Chart - Drawing Pie Charts