## Introduction to Data Interpretation

#### Data Interpretation

Direction: Study the bar-graph and answer the following questions. 1. The total amount of money (approximately) needed to pay the monthly wages of all the workers is

1. As per the given bar graph , we have
Required amount = Number of worker × mean monthly wages
Required amount = 3 × 1050 + 8 × 1150 + 5 × 1250 + 4 × 1350 + 9 × 1450 + 8 × 1550 + 6 × 1650 + 7 × 1750
Required amount = 3150 + 9200 + 6250 + 5400 + 13050 + 12400 + 9900 + 12250

##### Correct Option: B

As per the given bar graph , we have
Required amount = Number of worker × mean monthly wages
Required amount = 3 × 1050 + 8 × 1150 + 5 × 1250 + 4 × 1350 + 9 × 1450 + 8 × 1550 + 6 × 1650 + 7 × 1750
Required amount = 3150 + 9200 + 6250 + 5400 + 13050 + 12400 + 9900 + 12250 = ₹ 71600
Hence , the total amount of money needed to pay the monthly wages of all the workers is ₹ 71600 .

1. The ratio of the number of workers placed in the lowest wage group to that of the workers in the highest wage group is

1. According to given bar graph , we have
Number of workers placed in the lowest wage group 1000 - 1100 = 3
Number of workers placed in the highest wage group 1700 - 1800 = 7
Required ratio = Number of workers placed in the lowest wage group 1000 - 1100 : Number of workers placed in the highest wage group 1700 - 1800

##### Correct Option: A

According to given bar graph , we have
Number of workers placed in the lowest wage group 1000 - 1100 = 3
Number of workers placed in the highest wage group 1700 - 1800 = 7
Required ratio = Number of workers placed in the lowest wage group 1000 - 1100 : Number of workers placed in the highest wage group 1700 - 1800
Required ratio = 3 : 7

1. The total number of workers in the factory is

1. From the given bar diagram , we see
Number of workers who got monthly wages in rupees 1000 - 1100 = 3
Number of workers who got monthly wages in rupees 1100 - 1200 = 8
Number of workers who got monthly wages in rupees 1200 - 1300 = 5
Number of workers who got monthly wages in rupees 1300 - 1400 = 4
Number of workers who got monthly wages in rupees 1400 - 1500 = 9
Number of workers who got monthly wages in rupees 1500 - 1600 = 8
Number of workers who got monthly wages in rupees 1600 - 1700 = 6
Number of workers who got monthly wages in rupees 1700 - 1800 = 7

##### Correct Option: C

From the given bar diagram , we see
Number of workers who got monthly wages in rupees 1000 - 1100 = 3
Number of workers who got monthly wages in rupees 1100 - 1200 = 8
Number of workers who got monthly wages in rupees 1200 - 1300 = 5
Number of workers who got monthly wages in rupees 1300 - 1400 = 4
Number of workers who got monthly wages in rupees 1400 - 1500 = 9
Number of workers who got monthly wages in rupees 1500 - 1600 = 8
Number of workers who got monthly wages in rupees 1600 - 1700 = 6
Number of workers who got monthly wages in rupees 1700 - 1800 = 7
Total number of workers = 3 + 8 + 5 + 4 + 9 + 8 + 6 + 7 = 50

Direction: Study the following histogram and answer the questions. 1. The percentage of population under study which is in the age group of 40 – 45 is :

1. On the basis of given graph in question ,
Number of persons in the age group of 40 – 45 = 25

 Required percentage = 25 × 100 500

##### Correct Option: D

On the basis of given graph in question ,
Number of persons in the age group of 40 – 45 = 25

 Required percentage = 25 × 100 = 5% 500

1. The ratio of maximum population in an age group to the total number of persons under study is :

1. On the basis of given graph in question ,
Maximum population in age group 15 – 20 → 450
Required ratio = Maximum population in an age group to the total number of persons

 Required ratio = 450 500

##### Correct Option: B

On the basis of given graph in question ,
Maximum population in age group 15 – 20 → 450
Required ratio = Maximum population in an age group to the total number of persons

 Required ratio = 450 = 9 500 10