Question

& Construct a pie chart based on the
following data
Category. value
A 10
B 20
C. 30
D. 40












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Answer 1

Answer:

Explanation:

The pie chart is a pictorial representation of data relative to a whole. Each portion in the circle represent an element of the collected data. The pie chart represents the composition of various elements in a whole. The total value of the pie chart is always 100%.  Each portion in the circle shows a fraction or percentage of the total.  

 

Pie chart is a circular graph which is used to represent data. In this :

● Various observations of the data are represented by the sectors of the circle.

● The total angle formed at the centre is 360°.

● The whole circle represents the sum of the values of all the components.

● The angle at the centre corresponding to the particular observation component is given by

Pie Chart

● If the values of observation/components are expressed in percentage, then the centre angle corresponding to particular observation/component is given by

Pie Chart

How to construct a pie chart?

Steps of construction of pie chart for a given data:

● Find the central angle for each component using the formula given on the previous page.

● Draw a circle of any radius.

● Draw a horizontal radius

● Starting with the horizontal radius, draw radii, making central angles corresponding to the values of respective components.

● Repeat the process for all the components of the given data.