## Introduction to Data Interpretation

#### Data Interpretation

Direction: The Bar Graph given here shows the population (in crores) of India in various census years. Observe the graph and answer the question based on it. 1. Per year increase in population from the year 1931 to 1981 is

1. On the basis of given graph in question ,
Population in 1981 = 68.40 million
Population in 1931 = 27.90 million
Total Increase = (68.40 – 27.90) million = 40.5 million

 ∴ Annual increase = 40.5 million 50

##### Correct Option: A

On the basis of given graph in question ,
Population in 1981 = 68.40 million
Population in 1931 = 27.90 million
Total Increase = (68.40 – 27.90) million = 40.5 million

 ∴ Annual increase = 40.5 million 50

 Annual increase = 40.5 × 10000000 = 8100000 50

1. In which census year, the percent increase in population is least as compared to that in the previous census year?

1. As per the given bar graph in question ,
Population in 1941 = 31.85 million
Population in 1931 = 27.90 million
Increase = (31.85 – 27.90) million = 3.95 million

 Percentage increase in 1941 = Increase × 100 Population in 1931

 Percentage increase in 1941 = 3.95 × 100 = 14.16% 27.90

Again , Population in 1951 = 36.14 million
Population in 1941 = 31.85 million
Increase = ( 36.14 – 31.85 ) million = 4.29 million

##### Correct Option: B

As per the given bar graph in question ,
Population in 1941 = 31.85 million
Population in 1931 = 27.90 million
Increase = (31.85 – 27.90) million = 3.95 million

 Percentage increase in 1941 = Increase × 100 Population in 1931

 Percentage increase in 1941 = 3.95 × 100 = 14.16% 27.90

Again , Population in 1951 = 36.14 million
Population in 1941 = 31.85 million
Increase = ( 36.14 – 31.85 ) million = 4.29 million
 Percentage increase in 1951 = Increase × 100 Population in 1941

 Percentage increase in 1951 = 4.29 × 100 × 100 = 13.47% 31.85

Hence, % increase is least in 1951

1. In which census year, the percent increase in population is highest as compared to that in the previous census year?

1. On the basis of given bar graph in question ,
Percentage increase in 1981 = 24.8% ( From Previous question Answer )
Population in 1971 = 54.80 million
Population in 1961 = 43.92 million
Increase = (54.80 – 43.92) million

 ∴ Percent Increase in 1971 = Increase × 100 Population in 1961

##### Correct Option: D

On the basis of given bar graph in question ,
Percentage increase in 1981 = 24.8% ( From Previous question Answer )
Population in 1971 = 54.80 million
Population in 1961 = 43.92 million
Increase = (54.80 – 43.92) million

 ∴ Percent Increase in 1971 = Increase × 100 Population in 1961

 Percentage increase in 1971 = 54.80 - 43.92 × 100 = 24.77% 43.92

Hence, increase is highest in 1981.

1. The percent increase in population from 1971 to 1981 is

1. As per the given bar graph in question ,
Population in 1971 = 54.80 million
Population in 1981 = 68.40 million
Increase = (68.40 – 54.80) million = 13.6 million

 ∴ Increase% = Increase × 100 Population in 1971

##### Correct Option: A

As per the given bar graph in question ,
Population in 1971 = 54.80 million
Population in 1981 = 68.40 million
Increase = (68.40 – 54.80) million = 13.6 million

 ∴ Increase% = Increase × 100 Population in 1971

 ∴ Increase% = 13.6 × 100 = 24.8 % 54.80

Direction: Study the bar diagram given below carefully and answer the following questions based on it. 1. By how much percent is the birth-rate of England less than the birth-rate of New Zealand?

1. On the basis of given graph in question ,
Birth–rate of England = 20
Birth–rate of New Zealand = 30

 Required percentage = 30 × 100 = 100 % 30 3

##### Correct Option: B

On the basis of given graph in question ,
Birth–rate of England = 20
Birth–rate of New Zealand = 30

 Required percentage = 30 × 100 = 100 % 30 3

 Required percentage = 33 1 % 3