In this section, the following topics are discussed with example

## PIE CHARTS

Pie charts are another type of data interpretation where the data is represented in the form of a circle. In a pie chart, a circle is divided into various sections or segments such that each sector or segment represents a certain proportion or percentage of the total.

In such a diagram, the total of all the given items is equated to 360 degrees and the degrees of angles, representing different items, are calculated proportionately.As we know a circle has 360°

## To argue with a person who has renounced the use of reason is like administering medicine to the dead.

THOMAS PAINE

#### EXAMPLES

Ex 1:

Understand the chart and answer the following questions:

#### PROPORTION OF POPULATION OF VILLAGES IN 2016

Village% Population Below Poverty Line
Kattalai38
Kurichi52
Kothaali42
Poovani51
Vallanadu49
Panaiyur46
Sittur58

1. If the population of village Poovani in 2016 is 32000, then what will be the population of village Kurichi below poverty line in that year?

Sol:

Population of village Poovani = 32000 (given).

Let the population of village Kurichi be y.

16 :15 = 32000 : y

Hence, y=(32000×15)/16

=30000

Population of village Kurichi below poverty line = 52% of 30000 = 15600.

2. The ratio of population of village Panaiyur below poverty line to that of village Kothaali below poverty line in 2016 is:

Sol:

Let N be the total population of all the seven villages.

Then, population of village Panaiyur below poverty line = 46% of (21% of N)

and Population of villages Kothaali below the poverty line = 42% of (11% of N)

Required ratio = (46% of (21% of N))/(42% of (11% of N))

= 23/11.

Thus in this section we learned about the concepts of Pie Charts Data Interpretation question format. In next section, we will learn about the second type of Data Interpretation question format – The Bar Chart.