Draw a pie diagram for the following data of the investment pattern in a five years plan :


Agriculture



Irrigation


& Power



Small


Industries



Transport



Social;


Service



Miscellaneous



14%



16%



29%



17%



16%



8%


Here, total investment = 100%


So,


The central angle = × 360°


Hence, the central angle for each activity will be calculated as follows


Item



Amount



Sector angle (degree)



Agriculture



14



14/100 x 360 = 50.4



Irrigation and Power



16



16/100 x 360 = 57.6



Small Industries



29



29/100 x 360 = 104.4



Transport



17



17/100 x 360 = 61.2



Social Service



16



16/100 x 360 = 57.6



Miscellaneous



8



8/100 x 360 = 28.8



Steps for construction of representation of data in pie chart


Step 1: Draw the circle of appropriate radius.


Step 2 : Choose a radius anywhere inside the circle.


Step 3 : Now draw a sector of calculated component’s central angle. It is always preferable to choose component with largest central angle first and then continue in descending order of magnitude of their central angle.


Step 4: After drawing sectors, shade them with different colours and label them as shown in the figure.



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