The percentages of various categories of workers in a state are given in the following table.
|Categoies||Culti-vators||Agricultural Labourers||Industrial Workers||Commercial Workers||Others|
|% of workers||40||25||12.5||10||12.5|
Present the information in the form a pie-chart.
Central angle of a component = (component value/sum of component values x 360)
Here, total percentage of workers = 100
Thus, the central angle for each component can be calculated as follows:
|Category||Percentage of workers||Sector angle|
|Cultivators||40||40/100 x 360 = 144|
|Agricultural labourers||25||25/100 x 360 = 90|
|Industrial workers||12.5||12.5/100 x 360 = 45|
|Commercial workers||10||10/100 x 360 = 36|
|Others||12.5||12.5/100 x 360 = 45|
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 other items in the clockwise direction 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