## Introduction to Data Interpretation

#### Data Interpretation

Direction: Circle graph given below shows the expenditure incurred in bringing out a book by a publisher.
Study the graph and answer the question.

1. The central angle of the sector for the cost of the paper is :

1. ∵ 100% ≡ 360°

 ∴ 16% ≡ 360 × 16 = 57.6° 100

##### Correct Option: D

∵ 100% ≡ 360°

 ∴ 16% ≡ 360 × 16 = 57.6° 100

Direction: The following pie-chart shows the preference of musical instruments of 60,000 people surveyed over whole India. Examine the chart and answer the questions.

1. The number of people who prefer Guitar is greater than the total number of people who prefer either Flute or Piano by :

1. Required no. of people = (22 – 11 – 9)% of 60000

 = 60000 ×2 = 1200 100

##### Correct Option: A

Required no. of people = (22 – 11 – 9)% of 60000

 = 60000 ×2 = 1200 100

1.  If 16 2 % of the people who prefer Piano, would go with the people who prefer Flute, the percentage of people who prefer Flute would have been 3

1. People who prefer Piano

 = 60000 × 9 = 5400 100

∴ New number of people who prefer flute
 = 6600 + 5400 × 50 300

= 6600 + 900 = 7500
∴ Required percentage
 = 7500 ×100 60000

= 12.5%

##### Correct Option: D

People who prefer Piano

 = 60000 × 9 = 5400 100

∴ New number of people who prefer flute
 = 6600 + 5400 × 50 300

= 6600 + 900 = 7500
∴ Required percentage
 = 7500 ×100 60000

= 12.5%

1. The number of people who prefer the musical instrument Sarod is :

1. People who prefer Sarod

 = 60000 × 14 = 8400 100

##### Correct Option: B

People who prefer Sarod

 = 60000 × 14 = 8400 100

1. The total number of people who prefer either Sarod or Guitar, is greater than the total number of people who prefer either Violin or Sitar by :

1. Difference of percentage = 22 + 14 – 20 – 14 = 2%