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 2006-07 = 1000
The production in 2007-08 = 1200
Increase in production = 1200 - 1000 = 200Percentage increase in 2007-08 = 200 × ́100 = 20% (lowest) 1000
The production in 2006-07 = 1000
The production in 2005-06 = 800
Increase in production = 1000 - 800 = 200
Correct Option: A
According to given bar graph , we have
The production in 2006-07 = 1000
The production in 2007-08 = 1200
Increase in production = 1200 - 1000 = 200Percentage increase in 2007-08 = 200 × ́100 = 20% (lowest) 1000
The production in 2006-07 = 1000
The production in 2005-06 = 800
Increase in production = 1000 - 800 = 200Percentage increase in 2006-07 = 200 × ́100 = 25% 800
- The production decreased from 2004-05 to 2005-06 by
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On the basis of given graph in question ,
The production in 2004-05 = 900
The production in 2005-06 = 800
Decrease in production = 900 - 800 = 100Required percentage decrease = Decrease in production × 100 The production in 2004-05
Correct Option: A
On the basis of given graph in question ,
The production in 2004-05 = 900
The production in 2005-06 = 800
Decrease in production = 900 - 800 = 100Required percentage decrease = Decrease in production × 100 The production in 2004-05 Required percentage decrease = 100 = 11 1 % 9 9
- The production in 2006-07 in comparison to the production in 2002-03 increased by
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From the given above bar graph ,
The production in 2006-07 = 1000
The production in 2002-03 = 400
Increase in production = 1000 - 400 = 600Required percentage increase = Increase in production × 100 The production in 2002-03
Correct Option: A
From the given above bar graph ,
The production in 2006-07 = 1000
The production in 2002-03 = 400
Increase in production = 1000 - 400 = 600Required percentage increase = Increase in production × 100 The production in 2002-03 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 ( 0-10 ) = 4
The number of the students obtaining marks in the last interval ( 40-50 ) = 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 ( 0-10 ) = 4
The number of the students obtaining marks in the last interval ( 40-50 ) = 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 .