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 Histogram and answer the following questions.

  1. The total number of students involved in the data is








  1. View Hint View Answer Discuss in Forum

    According to given bar graph , we have
    Number of students who obtained marks 0-10 = 4
    Number of students who obtained marks 10-20 = 6
    Number of students who obtained marks 20-30 = 10
    Number of students who obtained marks 30-40 = 8
    Number of students who obtained marks 40-50 = 5

    Correct Option: A

    According to given bar graph , we have
    Number of students who obtained marks 0-10 = 4
    Number of students who obtained marks 10-20 = 6
    Number of students who obtained marks 20-30 = 10
    Number of students who obtained marks 30-40 = 8
    Number of students who obtained marks 40-50 = 5
    Required total number of students = 4 + 6 + 10 + 8 + 5 = 33

Direction: The Histogram shown the marks of 50 students in an examination. Examine the diagram and answer the questions. [Marks are given in integers only].

  1. What percent of students did obtain marks above 60?








  1. View Hint View Answer Discuss in Forum

    On the basis of given graph in question ,
    Number of students obtaining above 60 marks = 35
    Total number of students = 1 + 4 + 2 + 8 + 10 + 12 + 5 + 8 = 50

    ∴ Required percentage =
    Number of students obtaining above 60 marks
    		 × 100
    Total number of students

    Correct Option: C

    On the basis of given graph in question ,
    Number of students obtaining above 60 marks = 35
    Total number of students = 1 + 4 + 2 + 8 + 10 + 12 + 5 + 8 = 50

    ∴ Required percentage =
    Number of students obtaining above 60 marks
    		 × 100
    Total number of students

    Required percentage =
    35
    		 × 100 = 70%
    50

  1. How many students obtained more than 39 but below 60?








  1. View Hint View Answer Discuss in Forum

    According to given bar graph , we have
    Number of students who marks obtained range 40-50 = 2
    Number of students who marks obtained range 50-60 = 8
    Required number of students = 2 + 8 = 10

    Correct Option: C

    According to given bar graph , we have
    Number of students who marks obtained range 40-50 = 2
    Number of students who marks obtained range 50-60 = 8
    Required number of students = 2 + 8 = 10
    Therefore , the number of students who marks obtained more than 39 but below 60 is 10.

Direction: Study the bar-graph and answer the following questions.

  1. In which wage group, is the amount of money needed to pay the monthly wages the highest?








  1. View Hint View Answer Discuss in Forum

    According to given bar graph , we have
    In wage group of 1400 – 1500 ,
    Number of worker = 9

    ∴ Mean monthly wage =
    1400 + 1500
    		 = 1450
    2

    Correct Option: A

    According to given bar graph , we have
    In wage group of 1400 – 1500 ,
    Number of worker = 9

    ∴ Mean monthly wage =
    1400 + 1500
    		 = 1450
    2

    Required Amount = 1450 × 9 = ₹ 13050

  1. The total amount of money (approximately) needed to pay the monthly wages of all the workers is








  1. View Hint View Answer Discuss in Forum

    As per the given bar graph , we have
    Required amount = Number of worker × mean monthly wages
    Required amount = 3 × 1050 + 8 × 1150 + 5 × 1250 + 4 × 1350 + 9 × 1450 + 8 × 1550 + 6 × 1650 + 7 × 1750
    Required amount = 3150 + 9200 + 6250 + 5400 + 13050 + 12400 + 9900 + 12250

    Correct Option: B

    As per the given bar graph , we have
    Required amount = Number of worker × mean monthly wages
    Required amount = 3 × 1050 + 8 × 1150 + 5 × 1250 + 4 × 1350 + 9 × 1450 + 8 × 1550 + 6 × 1650 + 7 × 1750
    Required amount = 3150 + 9200 + 6250 + 5400 + 13050 + 12400 + 9900 + 12250 = ₹ 71600
    Hence , the total amount of money needed to pay the monthly wages of all the workers is ₹ 71600 .