Introduction to Data Interpretation


Introduction to Data Interpretation

Direction: The histogram, given below, shows the number of families of a locality having various daily incomes, as obtained by a survey. Observe the graph and answer the questions based on it.

  1. The number of families, whose daily incomes are $ 800 or above, is









  1. View Hint View Answer Discuss in Forum

    According to given bar graph , we have
    Number of families in daily income interval 800-900 = 40
    Number of families in daily income interval 900-1000 = 15
    Required number of families = Number of families in daily income interval 800-900 + Number of families in daily income interval 900-1000

    Correct Option: B

    According to given bar graph , we have
    Number of families in daily income interval 800-900 = 40
    Number of families in daily income interval 900-1000 = 15
    Required number of families = Number of families in daily income interval 800-900 + Number of families in daily income interval 900-1000
    Required number of families = 40 + 15 = 55


  1. In all, how many families were surveyed?









  1. View Hint View Answer Discuss in Forum

    As per the given above bar graph , we have
    Number of families who have daily income interval 0-100 = 15
    Number of families who have daily income interval 100-200 = 10
    Number of families who have daily income interval 200-300 = 40
    Number of families who have daily income interval 300-400 = 5
    Number of families who have daily income interval 400-500 = 20
    Number of families who have daily income interval 500-600 = 30
    Number of families who have daily income interval 600-700 = 15
    Number of families who have daily income 700-800 = 10
    Number of families who have daily income interval 800-900 = 40
    Number of families who have daily income interval 900-1000 = 15

    Correct Option: C

    Number of families who have daily income interval 0-100 = 15
    Number of families who have daily income interval 100-200 = 10
    Number of families who have daily income interval 200-300 = 40
    Number of families who have daily income interval 300-400 = 5
    Number of families who have daily income interval 400-500 = 20
    Number of families who have daily income interval 500-600 = 30
    Number of families who have daily income interval 600-700 = 15
    Number of families who have daily income 700-800 = 10
    Number of families who have daily income interval 800-900 = 40
    Number of families who have daily income interval 900-1000 = 15
    Total number of families = 15 + 10 + 40 + 5 + 20 + 30 + 15 + 10 + 40 + 15 = 200



Direction: Study the histogram of weight distribution of different men and answer question-based on it.

  1. Average number of men per interval who participated in this survey is









  1. View Hint View Answer Discuss in Forum

    From the given above bar graph , we can see
    Total number of men per interval = 100 + 220 + 300 + 200 + 250 = 1070
    Number of men = 5

    Required average =
    Total number of men per interval
    Number of men

    Correct Option: C

    From the given above bar graph , we can see
    Total number of men per interval = 100 + 220 + 300 + 200 + 250 = 1070
    Number of men = 5

    Required average =
    Total number of men per interval
    Number of men

    Required average =
    1070
    = 214
    5


Direction: Study the graph carefully and answer the questions.
The graph shows production of an item (in tonnes) during certain years

  1. The production from 2003 – 04 to 2007 – 08 increased by









  1. View Hint View Answer Discuss in Forum

    On the basis of given graph in question ,
    The production in 2007-08 = 1200
    The production in 2003-04 = 600
    Increase in production = 1200 - 600 = 600

    Required percentage increase =
    Increase in production
    × 100
    The production in 2003-04

    Correct Option: D

    On the basis of given graph in question ,
    The production in 2007-08 = 1200
    The production in 2003-04 = 600
    Increase in production = 1200 - 600 = 600

    Required percentage increase =
    Increase in production
    × 100
    The production in 2003-04

    Required percentage increase =
    600
    × 100 = 100%
    600



  1. The year in which production increased the lowest as compared to the previous year is









  1. View Hint View Answer Discuss in Forum

    According to given bar graph , we have
    The production in 2006-07 = 1000
    The production in 2007-08 = 1200
    Increase in production = 1200 - 1000 = 200

    Percentage increase in 2007-08 =
    200
    × ́100 = 20% (lowest)
    1000

    The production in 2006-07 = 1000
    The production in 2005-06 = 800
    Increase in production = 1000 - 800 = 200

    Correct Option: A

    According to given bar graph , we have
    The production in 2006-07 = 1000
    The production in 2007-08 = 1200
    Increase in production = 1200 - 1000 = 200

    Percentage increase in 2007-08 =
    200
    × ́100 = 20% (lowest)
    1000

    The production in 2006-07 = 1000
    The production in 2005-06 = 800
    Increase in production = 1000 - 800 = 200
    Percentage increase in 2006-07 =
    200
    × ́100 = 25%
    800