Following is the break up of the expenditure of a family on different items of consumption:
|Expenditure (in Rs)||1600||200||600||150||100||80||270|
Draw a pie-diagram to represent the above data.
Central angle of a component = (component value/sum of component values x 360)
Here, total expenditure = Rs 3000
Thus, central angle for each component can be calculated as follows:
|Item||Expenditure (in Rs)||Sector angle|
|Food||1600||1600/3000 x 360 = 192|
|Clothing||200||200/3000 x 360 = 24|
|Rent||600||600/3000 x 360 = 72|
|Education||150||150/3000 x 360 = 18|
|Fuel etc||100||100/3000 x 360 = 12|
|Medicine||80||80/3000 x 360 = 9.6|
|Miscellaneous||270||270/3000 x 360 = 32.4|
Total : 3000 (in Rs)
Now, the pie chat representing the given data can be constructed by following the steps below:
Step 1 : Draw a 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 192o. Draw a sector with the central angle 192o 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 in the figure below.
Video Tutorials For All Subjects
- Circle Graph Or Pie Chart - Drawing Pie Charts