Introduction to Data Interpretation
Direction: Study the graph carefully and answer the questions.
The graph shows production of an item (in tonnes) during certain years
 The year in which production increased the lowest as compared to the previous year is

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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
 The production decreased from 200405 to 200506 by

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On the basis of given graph in question ,
The production in 200405 = 900
The production in 200506 = 800
Decrease in production = 900  800 = 100Required percentage decrease = Decrease in production × 100 The production in 200405
Correct Option: A
On the basis of given graph in question ,
The production in 200405 = 900
The production in 200506 = 800
Decrease in production = 900  800 = 100Required percentage decrease = Decrease in production × 100 The production in 200405 Required percentage decrease = 100 = 11 1 % 9 9
 The production in 200607 in comparison to the production in 200203 increased by

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From the given above bar graph ,
The production in 200607 = 1000
The production in 200203 = 400
Increase in production = 1000  400 = 600Required percentage increase = Increase in production × 100 The production in 200203
Correct Option: A
From the given above bar graph ,
The production in 200607 = 1000
The production in 200203 = 400
Increase in production = 1000  400 = 600Required percentage increase = Increase in production × 100 The production in 200203 Required percentage increase = 600 = 150% 4
Direction: Study the following Histogram and answer the following questions.
 The ratio of the students obtaining marks in the first and the last interval is

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According to given bar graph , we have
The number of the students obtaining marks in the first interval ( 010 ) = 4
The number of the students obtaining marks in the last interval ( 4050 ) = 5
Required ratio = The number of the students obtaining marks in the first interval : The number of the students obtaining marks in the last intervalCorrect Option: C
According to given bar graph , we have
The number of the students obtaining marks in the first interval ( 010 ) = 4
The number of the students obtaining marks in the last interval ( 4050 ) = 5
Required ratio = The number of the students obtaining marks in the first interval : The number of the students obtaining marks in the last interval
Required ratio = 4 : 5
 The least number of students got the marks in the interval

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On the basis of given graph in question ,
Required class interval = 0 – 10Correct Option: D
On the basis of given graph in question ,
The least number of students got the marks in the class interval = 0 – 10 .