## Introduction to Data Interpretation

#### Data Interpretation

Direction: The bar chart given below shows the percentage distribution of the production of various models of a mobile manufacturing company in 2007 and 2008. The total production in 2007 was 35 lakh mobile phones and in 2008 the production was 44 lakh. Study the chart and answer the following questions. 1. What was the difference in the number of B type mobiles produced in 2007 and 2008?

1. From the given bar diagram , we see
The total production in 2007 = 35 lakh mobile phones
and The total production in 2008 = 44 lakh mobile phones
Percent of mobiles of models B manufactured in 2008 = 20%
Percent of mobiles of models B manufactured in 2007 = 15%
Required difference = 20% of 44 - 15% of 35

 Required difference = 44 × 20 - 35 × 15 100 100

##### Correct Option: A

From the given bar diagram , we see
The total production in 2007 = 35 lakh mobile phones
and The total production in 2008 = 44 lakh mobile phones
Percent of mobiles of models B manufactured in 2008 = 20%
Percent of mobiles of models B manufactured in 2007 = 15%
Required difference = 20% of 44 - 15% of 35

 Required difference = 44 × 20 - 35 × 15 100 100

 Required difference = 880 - 525 = 355 lakhs 100 100

Required difference = 355000

1. For which models was the percentage variation in production from 2007 to 2008 the maximum?

1. On the basis of given graph in question ,
Percent of mobiles of models A manufactured in 2007 = 30%
Percent of mobiles of models A manufactured in 2008 = 40%
Change in manufacture = 40 - 30
Percentage variation :

 Model A ⇒ 40 - 30 × 100 = 33 1 % 30 3

Percent of mobiles of models B manufactured in 2007 = 15%
Percent of mobiles of models B manufactured in 2008 = 20%
Change in manufacture = 20 - 15

##### Correct Option: D

On the basis of given graph in question ,
Percent of mobiles of models A manufactured in 2007 = 30%
Percent of mobiles of models A manufactured in 2008 = 40%
Change in manufacture = 40 - 30
Percentage variation :

 Model A ⇒ 40 - 30 × 100 = 33 1 % 30 3

Percent of mobiles of models B manufactured in 2007 = 15%
Percent of mobiles of models B manufactured in 2008 = 20%
Change in manufacture = 20 - 15
 Model B ⇒ 20 - 15 × 100 = 33 1 % 15 3

Percent of mobiles of models C manufactured in 2007 = 20%
Percent of mobiles of models C manufactured in 2008 = 15%
Change in manufacture = 15 - 20
 Model C ⇒ 15 - 20 × 100 = -25% 20

1. Total number of mobiles of models A, B and E manufactured in 2007 was

1. From the given bar diagram ,
Given , The total production in 2007 = 35 lakh mobile phones
Percent of mobiles of models A manufactured in 2007 = 30%
Percent of mobiles of models B manufactured in 2007 = 15%
Percent of mobiles of models E manufactured in 2007 = 15%
Total number of mobiles of models A, B and E in 2007 = 30% of 35 + 15% of 35 + 15% of 35

 Required answer = 35 × 30 + 35 × 15 + 35 × 15 100 100 100

##### Correct Option: C

From the given bar diagram ,
Given , The total production in 2007 = 35 lakh mobile phones
Percent of mobiles of models A manufactured in 2007 = 30%
Percent of mobiles of models B manufactured in 2007 = 15%
Percent of mobiles of models E manufactured in 2007 = 15%
Total number of mobiles of models A, B and E in 2007 = 30% of 35 + 15% of 35 + 15% of 35

 Required answer = 35 × 30 + 35 × 15 + 35 × 15 100 100 100

 Required answer = 35 (30 + 15 + 15) 100

 Required answer = 35 × 60 = 21 lakhs 1000

Direction: The bar graph given here shows the number of job- seekers of a state in various years at different stages of education. Study the graph carefully and answer the questions based on it. 1. The number of job-seekers, having their qualification as Senior Secondary, in the year 1974 was :

1. From the given bar diagram , we see
Total number of Graduate and senior secondary job-seekers in year 1974 = 1050
Number of Graduate job-seekers in year 1974 = 525
Required number of job-seekers = Total number of Graduate and senior secondary job-seekers in year 1974 - Number of Graduate job-seekers in year 1974

##### Correct Option: A

From the given bar diagram , we see
Total number of Graduate and senior secondary job-seekers in year 1974 = 1050
Number of Graduate job-seekers in year 1974 = 525
Required number of job-seekers = Total number of Graduate and senior secondary job-seekers in year 1974 - Number of Graduate job-seekers in year 1974
Required number of job-seekers = 1050 – 525 = 525

1. In which year, was the number of Matriculate job-seekers maximum?

1. On the basis of given graph in question ,
Year 1976 , Total number of job seekers = 3300
Number of Graduate and senior secondary job- seekers = 1800
∴ Number of Matriculate job- seekers = 3300 – 1800 = 1500
Year 1977 , Total number of job seekers = 4000
Number of Graduate and senior secondary job- seekers = 2200
∴ Number of Matriculate job- seekers =
4000 – 2200 = 1800 ⇒ maximum

##### Correct Option: D

On the basis of given graph in question ,
Year 1976 , Total number of job seekers = 3300
Number of Graduate and senior secondary job- seekers = 1800
∴ Number of Matriculate job- seekers = 3300 – 1800 = 1500
Year 1977 , Total number of job seekers = 4000
Number of Graduate and senior secondary job- seekers = 2200
∴ Number of Matriculate job- seekers =
4000 – 2200 = 1800 ⇒ maximum
Hence , required answer is 1977 year .