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: The bar graph provided below gives the data of the production of paper (in lakh tonnes) by three different companies X, Y and Z over the years. Study the bar chart and answer the following questions.

  1. The average production for five years is maximum for which company?








  1. View Hint View Answer Discuss in Forum

    From the given bar diagram , we see
    Total production of Company X for 5 years = 30 + 45 + 25 + 50 + 40 = 190 lakh tonnes
    Number of given years = 5

    Average production of Company X = Total production of Company X for 5 yearslakh tonnes
    Number of given years

    Average production of Company X =
    190
    		 = 38 lakh tonnes
    5

    Total production of Company Y for 5 years = 25 + 35 + 35 + 40 + 50 = 185 lakh tonnes
    Number of given years = 5
    Average production of Company Y = Total production of Company Y for 5 yearslakh tonnes
    Number of given years

    Average production of Company Y =
    185
    		= 37 lakh tonnes
    5

    Total production of Company Z for 5 years = 35 + 40 + 45 + 35 + 35 = 190 lakh tonnes
    Number of given years = 5

    Correct Option: A

    From the given bar diagram , we see
    Total production of Company X for 5 years = 30 + 45 + 25 + 50 + 40 = 190 lakh tonnes
    Number of given years = 5

    Average production of Company X = Total production of Company X for 5 yearslakh tonnes
    Number of given years

    Average production of Company X =
    190
    		 = 38 lakh tonnes
    5

    Total production of Company Y for 5 years = 25 + 35 + 35 + 40 + 50 = 185 lakh tonnes
    Number of given years = 5
    Average production of Company Y = Total production of Company Y for 5 yearslakh tonnes
    Number of given years

    Average production of Company Y =
    185
    		= 37 lakh tonnes
    5

    Total production of Company Z for 5 years = 35 + 40 + 45 + 35 + 35 = 190 lakh tonnes
    Number of given years = 5
    Average production of Company Z = Total production of Company Z for 5 yearslakh tonnes
    Number of given years

    Average production of Company Z =
    190
    		= 38 lakh tonnes
    5

    Thus , required answer is companies X and Z .

  1. The ration of the average production of company X in the period 1998-2000 to the average production of company Y in the same period is :








  1. View Hint View Answer Discuss in Forum

    As per the given bar graph , we have
    Total production of company X during 1998 – 2000 = 25 + 50 + 40 = 115 lakh tonnes
    Number of given years = 3

    Average production of company X ⇒ Total production of company Xlakh tonnes
    Number of given years

    Average production of company X =
    115
    		lakh tonnes
    3

    Total production of company Y during 1998 – 2000 = 35 + 40 + 50 = 125 lakh tonnes
    Number of given years = 3
    Average production of company Y ⇒ Total production of company Ylakh tonnes
    Number of given years

    Correct Option: B

    As per the given bar graph , we have
    Total production of company X during 1998 – 2000 = 25 + 50 + 40 = 115 lakh tonnes
    Number of given years = 3

    Average production of company X ⇒ Total production of company Xlakh tonnes
    Number of given years

    Average production of company X =
    115
    		lakh tonnes
    3

    Total production of company Y during 1998 – 2000 = 35 + 40 + 50 = 125 lakh tonnes
    Number of given years = 3
    Average production of company Y ⇒ Total production of company Ylakh tonnes
    Number of given years

    Average production of company Y ⇒ 125lakh tonnes
    3

    Required ratio =
    115
    		:
    125
    		= 23 : 25
    33

  1. The percentage of production of company Z to the production of company Y is maximum in :








  1. View Hint View Answer Discuss in Forum

    On the basis of given graph in question ,
    Production of company Z in 1996 = 35 lakh tonnes
    Production of company Y in 1996 = 25 lakh tonnes

    Percentage of production in year 1996 ⇒
    35
    		 × 100 = 140%
    25

    Production of company Z in 1997 = 40 lakh tonnes
    Production of company Y in 1997 = 35 lakh tonnes
    Percentage of production in year 1997 ⇒
    40
    		 × 100 ≈ 114%
    35

    Correct Option: B

    On the basis of given graph in question ,
    Production of company Z in 1996 = 35 lakh tonnes
    Production of company Y in 1996 = 25 lakh tonnes

    Percentage of production in year 1996 ⇒
    35
    		 × 100 = 140%
    25

    Production of company Z in 1997 = 40 lakh tonnes
    Production of company Y in 1997 = 35 lakh tonnes
    Percentage of production in year 1997 ⇒
    40
    		 × 100 ≈ 114%
    35

    Production of company Z in 1998 = 45 lakh tonnes
    Production of company Y in 1998 = 35 lakh tonnes
    Percentage of production in year 1998 ⇒
    45
    		 × 100 ≈ 129%
    35

    Therefore , The percentage of production of company Z to the production of company Y is maximum in 1996 .

Direction: The following chart represents Demand and Production for 5 companies ABCDE. On the basis of the graph answer the questions.

  1. The ratio of the number of companies having more demand than production to those having more production than demand is :








  1. View Hint View Answer Discuss in Forum

    From the given bar diagram , we see
    Number of companies having more demand than production ( having A , C and E companies ) = 3
    Number of companies having more production than demand ( having B and D companies ) = 2
    Required ratio = Number of companies having more demand than production : Number of companies having more production than demand

    Correct Option: C

    From the given bar diagram , we see
    Number of companies having more demand than production ( having A , C and E companies ) = 3
    Number of companies having more production than demand ( having B and D companies ) = 2
    Required ratio = Number of companies having more demand than production : Number of companies having more production than demand
    ∴ Required ratio = 3 : 2

  1. The difference between average demand and average production of the five companies taken together is :








  1. View Hint View Answer Discuss in Forum

    As per the given bar graph , we have
    Total production = 1500 + 1800 + 1000 + 2700 + 2200 = 9200
    Total demand = 3000 + 600 + 2500 + 1200 + 3300 = 10600
    Number of given companies = 5
    Required difference = Average demand - Average production

    Required difference =
    1
    		(10600 - 9200)
    5

    Correct Option: B

    As per the given bar graph , we have
    Total production = 1500 + 1800 + 1000 + 2700 + 2200 = 9200
    Total demand = 3000 + 600 + 2500 + 1200 + 3300 = 10600
    Number of given companies = 5
    Required difference = Average demand - Average production

    Required difference =
    1
    		(10600 - 9200)
    5

    Required difference =
    1
    		 × 1400 = 280
    5