The following table shows how a student spends his pocket money during the course of a month. Represent it by a pie-diagram.
Central angle of a component = (component value/sum of component values x 360)
Here, total expenditure = 100%
Thus, central angle for each component can be calculated as follows:
|Food||40||40/100 x 360 = 144|
|Entertainment||25||25/100 x 360 = 90|
|Other expenditures||20||20/100 x 360 = 72|
|Savings||15||15/100 x 360 = 54|
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