Introduction to Data Interpretation
Direction: Following table gives details about the percentage change of the population in a particular town for given yea$ Go through the chart given and answer the questions that follow :
 What was the population of the town in year 2009?

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On the basis of given graph in question ,We have only percentage increase in population, and no data about population in 2008 or elsewhere is available.
Correct Option: D
On the basis of given graph in question ,We have only percentage increase in population, and no data about population in 2008 or elsewhere is available.
Therefore , required answer can not be determined .
 Which year out of these 8 years has the highest population?

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As per the given bar graph ,
Clearly, in the year 2011 the population will be maximum as it increases each year.Correct Option: D
As per the given bar graph ,
Clearly, in the year 2011 the population will be maximum as it increases each year.
Hence , correct answer is option D .
 How many years witnessed a decrease in population across all the given years?

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On the basis of given graph in question ,
There is continuous increase in population as evident form the bar diagram.Correct Option: D
On the basis of given graph in question ,
There is continuous increase in population as evident form the bar diagram. So , required answer is 0 .
Direction: The graph shows the production of food grains of a country in different yea$ Study the graph and answer the questions.
 The two consecutive years in which rate of change of production of food grains is minimum are

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According to given bar graph , we have
Year 1981 ⇒ 35 from 30 (Increase)
Year 1982 ⇒ 20 from 35 (Decrease)
Year 1983 ⇒ 25 from 20 (Increase)
Year 1984 ⇒ 15 from 25 (Decrease)
Year 1985 ⇒ 30 from 15 (Increase)Correct Option: A
It is obvious from the graph.
Year 1981 ⇒ 35 from 30 (Increase)
Year 1982 ⇒ 20 from 35 (Decrease)
Year 1983 ⇒ 25 from 20 (Increase)
Year 1984 ⇒ 15 from 25 (Decrease)
Year 1985 ⇒ 30 from 15 (Increase)
By calculating percentage, answer can be found.
Hence , required answer is 1980 and 1981 .
 The percentage increase in production from 1984 to 1985 was

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On the basis of given graph in question ,
The production of food grains in the year 1984 = 15 thousand tonnes
The production of food grains in the year 1985 = 30 thousand tonnes
Increase = 30  15 = 15 thousand tonnesPercentage increase = Increase × 100 The production of food grains in the year 1984
Correct Option: D
On the basis of given graph in question ,
The production of food grains in the year 1984 = 15 thousand tonnes
The production of food grains in the year 1985 = 30 thousand tonnes
Increase = 30  15 = 15 thousand tonnesPercentage increase = Increase × 100 The production of food grains in the year 1984 Percentage increase = 15 × 100 = 100% 15