Introduction to Data Interpretation
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.
 The number of families, whose daily incomes are $ 800 or above, is

View Hint View Answer Discuss in Forum
According to given bar graph , we have
Number of families in daily income interval 800900 = 40
Number of families in daily income interval 9001000 = 15
Required number of families = Number of families in daily income interval 800900 + Number of families in daily income interval 9001000Correct Option: B
According to given bar graph , we have
Number of families in daily income interval 800900 = 40
Number of families in daily income interval 9001000 = 15
Required number of families = Number of families in daily income interval 800900 + Number of families in daily income interval 9001000
Required number of families = 40 + 15 = 55
 In all, how many families were surveyed?

View Hint View Answer Discuss in Forum
As per the given above bar graph , we have
Number of families who have daily income interval 0100 = 15
Number of families who have daily income interval 100200 = 10
Number of families who have daily income interval 200300 = 40
Number of families who have daily income interval 300400 = 5
Number of families who have daily income interval 400500 = 20
Number of families who have daily income interval 500600 = 30
Number of families who have daily income interval 600700 = 15
Number of families who have daily income 700800 = 10
Number of families who have daily income interval 800900 = 40
Number of families who have daily income interval 9001000 = 15Correct Option: C
Number of families who have daily income interval 0100 = 15
Number of families who have daily income interval 100200 = 10
Number of families who have daily income interval 200300 = 40
Number of families who have daily income interval 300400 = 5
Number of families who have daily income interval 400500 = 20
Number of families who have daily income interval 500600 = 30
Number of families who have daily income interval 600700 = 15
Number of families who have daily income 700800 = 10
Number of families who have daily income interval 800900 = 40
Number of families who have daily income interval 9001000 = 15
Total number of families = 15 + 10 + 40 + 5 + 20 + 30 + 15 + 10 + 40 + 15 = 200
Direction: Study the histogram of weight distribution of different men and answer questionbased on it.
 Average number of men per interval who participated in this survey is

View Hint View Answer Discuss in Forum
From the given above bar graph , we can see
Total number of men per interval = 100 + 220 + 300 + 200 + 250 = 1070
Number of men = 5Required average = Total number of men per interval Number of men
Correct Option: C
From the given above bar graph , we can see
Total number of men per interval = 100 + 220 + 300 + 200 + 250 = 1070
Number of men = 5Required average = Total number of men per interval Number of men Required average = 1070 = 214 5
Direction: Study the graph carefully and answer the questions.
The graph shows production of an item (in tonnes) during certain years
 The production from 2003 – 04 to 2007 – 08 increased by

View Hint View Answer Discuss in Forum
On the basis of given graph in question ,
The production in 200708 = 1200
The production in 200304 = 600
Increase in production = 1200  600 = 600Required percentage increase = Increase in production × 100 The production in 200304
Correct Option: D
On the basis of given graph in question ,
The production in 200708 = 1200
The production in 200304 = 600
Increase in production = 1200  600 = 600Required percentage increase = Increase in production × 100 The production in 200304 Required percentage increase = 600 × 100 = 100% 600
 The year in which production increased the lowest as compared to the previous year is

View Hint View Answer Discuss in Forum
According to given bar graph , we have
The production in 200607 = 1000
The production in 200708 = 1200
Increase in production = 1200  1000 = 200Percentage increase in 200708 = 200 × ́100 = 20% (lowest) 1000
The production in 200607 = 1000
The production in 200506 = 800
Increase in production = 1000  800 = 200
Correct Option: A
According to given bar graph , we have
The production in 200607 = 1000
The production in 200708 = 1200
Increase in production = 1200  1000 = 200Percentage increase in 200708 = 200 × ́100 = 20% (lowest) 1000
The production in 200607 = 1000
The production in 200506 = 800
Increase in production = 1000  800 = 200Percentage increase in 200607 = 200 × ́100 = 25% 800