Introduction to Data Interpretation


Introduction to Data Interpretation

Direction: The following bar chart represents the number of first year B. Com. students of St Xavier’s College using different companies’ smartphones. Study bar chart and answer the questions.

  1. The difference between the total number of students using smartphones of Samsung combined together and the total number of students using smartphones of Sony taken together is









  1. View Hint View Answer Discuss in Forum

    On the basis of given graph in question ,
    Total number of students using smartphones of Samsung = 180 + 100 = 280
    Total number of students using smartphones of Sony
    = 160 + 60 = 220
    Required difference = Total number of students using smartphones of Samsung - Total number of students using smartphones of Sony

    Correct Option: B

    On the basis of given graph in question ,
    Total number of students using smartphones of Samsung = 180 + 100 = 280
    Total number of students using smartphones of Sony
    = 160 + 60 = 220
    Required difference = Total number of students using smartphones of Samsung - Total number of students using smartphones of Sony
    ∴ Required difference = 280 – 220 = 60


  1. What percentage of girls are using the smartphones of Nokia?









  1. View Hint View Answer Discuss in Forum

    According to given bar graph , we have
    Number of Girls who use smart phones = 180 + 60 + 120 + 20 = 380
    Number of Girls who use smart phones of Nokia = 120

    ∴ Required percentage =
    Number of Girls who use smart phones of Nokia
    × 100
    Number of Girls who use smart phones

    Correct Option: D

    According to given bar graph , we have
    Number of Girls who use smart phones = 180 + 60 + 120 + 20 = 380
    Number of Girls who use smart phones of Nokia = 120

    ∴ Required percentage =
    Number of Girls who use smart phones of Nokia
    × 100
    Number of Girls who use smart phones

    Required percentage =
    120
    × 100 = 31.58%
    380



  1. What percentage of boys are using the smartphones of Samsung?









  1. View Hint View Answer Discuss in Forum

    As per the given bar diagram , we see
    Number of Boys who use smart phones = 100 + 160 + 240 + 40 = 540
    Number of Boys who use smartphones of Samsung = 100

    ∴ Required percentage =
    Number of Boys who use smartphones of Samsung
    × 100
    Number of Boys who use smart phones

    Correct Option: C

    As per the given bar diagram , we see
    Number of Boys who use smart phones = 100 + 160 + 240 + 40 = 540
    Number of Boys who use smartphones of Samsung = 100

    ∴ Required percentage =
    Number of Boys who use smartphones of Samsung
    × 100
    Number of Boys who use smart phones

    Required percentage =
    100
    × 100 = 18.52%
    540


  1. The ratio of the number of boys to the number of girls using the smartphones of Samsung and Sony together is









  1. View Hint View Answer Discuss in Forum

    On the basis of given graph in question , we have
    The number of boys using the smartphones of Samsung and Sony = 100 + 160 = 260
    The number of girls using the smartphones of Samsung and Sony = 180 + 60 = 240
    Required ratio = The number of boys using the smartphones of Samsung and Sony : The number of girls using the smartphones of Samsung and Sony


    Correct Option: B

    On the basis of given graph in question , we have
    The number of boys using the smartphones of Samsung and Sony = 100 + 160 = 260
    The number of girls using the smartphones of Samsung and Sony = 180 + 60 = 240
    Required ratio = The number of boys using the smartphones of Samsung and Sony : The number of girls using the smartphones of Samsung and Sony
    Required ratio = 260 : 240 = 13 : 12



Direction: Study the double bar graph given below and answer the questions.

  1. The percentage of students of class VIII participating in cultural event out of total participants of cultural event is









  1. View Hint View Answer Discuss in Forum

    According to given bar graph , we have
    Total number of participants in cultural events = 180
    Students of class VIII = 45

    Required percentage =
    45
    × 100
    180

    Correct Option: B

    According to given bar graph , we have
    Total number of participants in cultural events = 180
    Students of class VIII = 45

    Required percentage =
    45
    × 100 = 25%
    180