## Introduction to Data Interpretation

#### Data Interpretation

Direction: Following histogram depicts the range of heights of students in a class of 60 students. Study the same and answer the questions. 1. Group which contains maximum number of students is

1. From the given above histogram , we can see
Number of students in 150 – 160 class interval = 25

##### Correct Option: B

From the given above histogram , we can see
Number of students in 150 – 160 class interval = 25 , which is maximum .

1. The number of students with their heights between 130 to 150 cms is

1. According to given bar graph , we have
The number of students having height interval 130-140 = 6
The number of students having height interval 140-150 = 8
Required number of students = The number of students having height interval 130-140 + The number of students having height interval 140-150

##### Correct Option: C

According to given bar graph , we have
The number of students having height interval 130-140 = 6
The number of students having height interval 140-150 = 8
Required number of students = The number of students having height interval 130-140 + The number of students having height interval 140-150
Required number of students = 6 + 8 = 14

1. The number of students having height more than 150 cms is

1. On the basis of given graph in question ,
The number of students having height interval 150-160 = 25
The number of students having height interval 160-170 = 7
The number of students having height interval 170-180 = 4
The number of students having height interval 180-190 = 2

##### Correct Option: C

On the basis of given graph in question ,
The number of students having height interval 150-160 = 25
The number of students having height interval 160-170 = 7
The number of students having height interval 170-180 = 4
The number of students having height interval 180-190 = 2
Required number of students = 25 + 7 + 4 + 2 = 38

Direction: The histogram, given below, shows the number of families of a locality having various daily incomes, as obtained by a survey. Observe the graph and answer the questions based on it. 1. What percent of families have their daily incomes less than \$ 500?

1. As per the given above bar graph , we have
Number of families who have daily income interval 0-100 = 15
Number of families who have daily income interval 100-200 = 10
Number of families who have daily income interval 200-300 = 40
Number of families who have daily income interval 300-400 = 5
Number of families who have daily income interval 400-500 = 20
Number of families who have daily incomes less than \$ 500 = 15 + 10 + 40 + 5 + 20 = 90
Total number of families = 15 + 10 + 40 + 5 + 20 + 30 + 15 + 10 + 40 + 15 = 200

##### Correct Option: B

As per the given above bar graph , we have
Number of families who have daily income interval 0-100 = 15
Number of families who have daily income interval 100-200 = 10
Number of families who have daily income interval 200-300 = 40
Number of families who have daily income interval 300-400 = 5
Number of families who have daily income interval 400-500 = 20
Number of families who have daily incomes less than \$ 500 = 15 + 10 + 40 + 5 + 20 = 90
Total number of families = 15 + 10 + 40 + 5 + 20 + 30 + 15 + 10 + 40 + 15 = 200

 Required percentage = 90 × 100 = 45% 200

1. The number of families, whose daily incomes are between \$ 500 and \$ 800, is

1. On the basis of given graph in question ,
Number of families in daily income interval 500-600 = 30
Number of families in daily income interval 600-700 = 15
Number of families in daily income interval 700-800 = 10
Required answer = Number of families in daily income interval 500-600 + Number of families in daily income interval 600-700 + Number of families in daily income interval 700-800

##### Correct Option: D

On the basis of given graph in question ,
Number of families in daily income interval 500-600 = 30
Number of families in daily income interval 600-700 = 15
Number of families in daily income interval 700-800 = 10
Required answer = Number of families in daily income interval 500-600 + Number of families in daily income interval 600-700 + Number of families in daily income interval 700-800