## Introduction to Data Interpretation

#### Data Interpretation

Direction: The pie chart given below represents the modes of transport for 1400 officers of the Staff Selection Commission, Kolkata.
Study the chart and answer the following questions. 1. The number of officers who go to office by Metro Rail is

1. Number of Metro rail users

 = 1400 × 8 = 112 100

##### Correct Option: C

Number of Metro rail users

 = 1400 × 8 = 112 100

1. Write down the difference : (officers availing train – officers availing car)

1. Required difference = (36 – 21)% of 1400

 = 1400 × 15 = 210 100

##### Correct Option: A

Required difference = (36 – 21)% of 1400

 = 1400 × 15 = 210 100

1. The ratio of two-wheelers and cars being used as modes of transport is

1. Two wheelers : cars
= 15 : 21
= 5 : 7

##### Correct Option: C

Two wheelers : cars
= 15 : 21
= 5 : 7

Direction: Pie-charts show the expenses on various heads in construction of a house. Study the pie-chart. 1. If the total cost of constructing the house is \$ 3,60,000 in 1991 and \$ 8,64,000, in 2001, what is the amount spent on Steel in 1991 and 2001?

1. Expenditure on steel :

 Year 1991 ⇒ 360000 × 50 360

= \$ 50000
 Year 2001 ⇒ 864000 × 60 360

= \$ 144000

##### Correct Option: D

Expenditure on steel :

 Year 1991 ⇒ 360000 × 50 360

= \$ 50000
 Year 2001 ⇒ 864000 × 60 360

= \$ 144000

1. The percentage increase in the amount spent on labour from 1991 to 2001, given that the total amount spent on the construction of the house is \$ 3,60, 000 in 1991 and \$ 8,64,000, in 2001 is

1. Expenditure on labourers :

 Year 1991 ⇒ 360000 × 90 360

= \$ 90000
 Year 2001 ⇒ 864000 × 100 360

= \$ 240000
Percentage increase
 = 240000 - 90000 × 100 90000

 = 1500 = 166.7% 9

##### Correct Option: E

Expenditure on labourers :

 Year 1991 ⇒ 360000 × 90 360

= \$ 90000
 Year 2001 ⇒ 864000 × 100 360

= \$ 240000
Percentage increase
 = 240000 - 90000 × 100 90000

 = 1500 = 166.7% 9