Introduction to Data Interpretation

Introduction to Data Interpretation

Easy Questions
Moderate Questions
Difficult Questions

Data Interpretation

Introduction to Data Interpretation
Table chart
Line chart
Pie chart
Bar graph
Mixed Graph
Data Sufficiency

Direction: Study the following table and answer the questions.

  1. The difference in the average number of candidates qualified in Science discipline per year from 2006 to 2008 and the average number of candidates qualified in the same discipline from 2009 to 2011 was








  1. View Hint View Answer Discuss in Forum

    As per the given above table , we see

    Candidates qualified under science discipline in year 2006 ⇒
    780 × 40
    		 = 312
    100

    Candidates qualified under science discipline in year 2007 ⇒
    650 × 42
    		 = 273
    100

    Candidates qualified under science discipline in year 2008 ⇒
    500 × 45
    		 = 225
    100

    Correct Option: A

    As per the given above table , we see

    Candidates qualified under science discipline in year 2006 ⇒
    780 × 40
    		 = 312
    100

    Candidates qualified under science discipline in year 2007 ⇒
    650 × 42
    		 = 273
    100

    Candidates qualified under science discipline in year 2008 ⇒
    500 × 45
    		 = 225
    100

    Candidates qualified under science discipline in year 2009 ⇒
    45 × 620
    		 = 279
    100

    Candidates qualified under science discipline in year 2010 ⇒
    35 × 900
    		 = 315
    100

    Candidates qualified under science discipline in year 2011 ⇒
    42 × 850
    		 = 357
    100

    Required average difference = Average number of candidates qualified in Science year from 2009 to 20011 - Average number of candidates qualified in Science year from 2006 to 2008
    Required average difference =
    1
    		[(279 + 315 + 357) – (312 + 273 + 225)] =
    1
    		 (951 – 810)
    33

    =
    1
    		 × 141 = 47
    3


  1. The decrease in the number of candidates qualified under Arts discipline from 2010 to 2011 was








  1. View Hint View Answer Discuss in Forum

    According to given table, we have

    Candidates qualified under arts discipline In 2010 =
    900 × 19
    		 = 171
    100

    Candidates qualified under arts discipline In 2011 =
    850 × 18
    		 = 153
    100

    Required difference = Candidates qualified under arts discipline In 2010 - Candidates qualified under arts discipline In 2011

    Correct Option: B

    According to given table, we have

    Candidates qualified under arts discipline In 2010 =
    900 × 19
    		 = 171
    100

    Candidates qualified under arts discipline In 2011 =
    850 × 18
    		 = 153
    100

    Required difference = Candidates qualified under arts discipline In 2010 - Candidates qualified under arts discipline In 2011
    ∴ Required difference = 171 – 153 = 18

Direction: A table showing the percentage of the total population of a State by age groups for the year 1991 is given below. Answer the questions given below it.

  1. If the difference between the number of people in the age groups (46 – 55) and (26 – 35) is 11.75 millions, then the total population of the State is approximately :








  1. View Hint View Answer Discuss in Forum

    As per the given above table , we see
    Difference in percent of people in the age groups (46 – 55) and (26 – 35) = 17.25 – 14.25 = 3%
    Now, 3% of total Population = 11.75 million

    Correct Option: B

    As per the given above table , we see
    Difference in percent of people in the age groups (46 – 55) and (26 – 35) = 17.25 – 14.25 = 3%
    Now, 3% of total Population = 11.75 million

    ∴ Total Population =
    11.75 × 100
    		 = 391.67 millions (approx.)
    3

  1. If there are 10 millions people in the age group 56 years and above, what is the difference between the number of people in the age group 16 – 25 and 46 – 55?








  1. View Hint View Answer Discuss in Forum

    On the basis of given table in question ,
    Percent of population in the age group 56 years and above = 5.12 + 1.13 = 6.25
    Now, 6.25% of population = 10 millions

    ∴ Total Population =
    10 × 100
    		 millions = 160 millions
    6.25

    Difference in per cent of people in the age groups (16 – 25) and (46 – 55) = 17.75 – 14.25 = 3.5%
    ∴ The required difference = 3.5% of 160 millions

    Correct Option: B

    On the basis of given table in question ,
    Percent of population in the age group 56 years and above = 5.12 + 1.13 = 6.25
    Now, 6.25% of population = 10 millions

    ∴ Total Population =
    10 × 100
    		 millions = 160 millions
    6.25

    Difference in per cent of people in the age groups (16 – 25) and (46 – 55) = 17.75 – 14.25 = 3.5%
    ∴ The required difference = 3.5% of 160 millions
    The required difference =
    3.5 × 160
    		 = 5.6 millions
    100

  1. There are 200 million people below 36 years. How many millions (approx.) people are in the age group 56 – 65?








  1. View Hint View Answer Discuss in Forum

    As per the given above table , we see
    Below 36 years, the percent of population is (30 + 17.75 + 17.25) = 65%
    Number of people age group below 36 years = 200 millions
    Percent of people in age group 56 – 65 = 5.12%

    Correct Option: B

    As per the given above table , we see
    Below 36 years, the percent of population is (30 + 17.75 + 17.25) = 65%
    Number of people age group below 36 years = 200 millions
    Percent of people in age group 56 – 65 = 5.12%

    ∴ The required number of people =
    200 × 5.12
    		 millions = 15.75 millions
    65