Introduction to Data Interpretation
Direction: Study the following graph and answer the questions given below it.
 What was the percentage increase in production of salt in 2008 compared to that of 2001?

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On the basis of given graph in question , we have
The production of salt in year 2001 = 40 ( in 1000 tonnes )
The production of salt in year 2008 = 90 ( in 1000 tonnes )
Increase = 90  40 = 50 ( in 1000 tonnes )Percentage increase = Increase × 100 The production of salt in year 2001 Percentage increase = 50 × 100 = 125% 40
Correct Option: B
On the basis of given graph in question , we have
The production of salt in year 2001 = 40 ( in 1000 tonnes )
The production of salt in year 2008 = 90 ( in 1000 tonnes )
Increase = 90  40 = 50 ( in 1000 tonnes )Percentage increase = Increase × 100 The production of salt in year 2001 Percentage increase = 50 × 100 = 125% 40
 The average production of 2004 and 2005 was exactly equal to the average production of which of the following pair of years?

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As per the given bar graph in question ,
The production of salt in year 2004 = 25000 tonnes
The production of salt in year 2005 = 55000 tonnes
Total production of salt = 25 + 55 = 80000 tonnesCorrect Option: C
As per the given bar graph in question ,
The production of salt in year 2004 = 25000 tonnes
The production of salt in year 2005 = 55000 tonnes
Total production of salt = 25 + 55 = 80000 tonnes
Required average production = 80000 ÷ 2 = 40000 tonnes
Hence, required answer is 2002 and 2006 .
 What was the percentage decline in the production of salt from 2003 to 2004?

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From the given bar graph in question ,
The production of salt in year 2003 = 70
The production of salt in year 2004 = 25
Decrease = 70  25 = 45Percentage decrease = Decrease × 100 The production of salt in year 2003 Percentage decrease = 45 × 100 70
Correct Option: A
From the given bar graph in question ,
The production of salt in year 2003 = 70
The production of salt in year 2004 = 25
Decrease = 70  25 = 45Percentage decrease = Decrease × 100 The production of salt in year 2003 Percentage decrease = 45 × 100 70 Percentage decrease = 4500 = 64.2% 70
Direction: Given here is a bar graph showing the number of cycles produced in a factory during five consecutive weeks. Observe the graph and answer the questions based on this graph.
 Total number of cycles produced in five consecutive weeks is

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As per the given bar graph in question ,
Number of cycles produced in 1st week = 800
Number of cycles produced in 2nd week = 1300
Number of cycles produced in 3rd week = 1060
Number of cycles produced in 4th week = 920
Number of cycles produced in 5th week = 1440
Required number of cycles = Total number of cycles produced in five consecutive weeksCorrect Option: A
As per the given bar graph in question ,
Number of cycles produced in 1st week = 800
Number of cycles produced in 2nd week = 1300
Number of cycles produced in 3rd week = 1060
Number of cycles produced in 4th week = 920
Number of cycles produced in 5th week = 1440
Required number of cycles = Total number of cycles produced in five consecutive weeks
∴ Required number of cycles = 800 + 1300 + 1060 + 920 + 1440 = 5520
 The number of cycles produced in the 5th week is

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On the basis of given bar graph in question ,
The number of cycles produced in the 5th week = 1440Correct Option: C
On the basis of given bar graph in question ,
The number of cycles produced in the 5th week = 1440
Hence , Required number of cycles is 1440 .