Page 154 - Data Science class 10
P. 154

Question 1: Tick yes for any of the given music types you like. Check no for those you don’t like.

                                           Music          Yes            No
                                         Classical

                                         Rap
                                         Bollywood
                                         Pop

                                         Rock
        Question 2: Choose your most favourite type of music.

          Classical
          Rap
          Bollywood
          Pop
          Rock
        Question 3: What is your second favourite type of music?
          Classical
          Rap
          Bollywood
          Pop
          Rock
        Question 4: Would you prefer a live band or a DJ at the annual dance event at school?

          DJ
          Live Band

        2.4.2. Analyse the Data
        Many of the graphical, tabular, and numerical summaries that we have made while collecting data can be enhanced
        and used for more sophisticated analyses at later stages. Displays at later stages mostly represent multiple variables
        and/or  use  multiple  displays  to  answer  the                 Music choices of students
        statistical investigative questions. To analyse the   60
        survey data collected using a class as a sample
        for the school, we can graph the number of
        students who like each type of music.             50

        The bar graph in the following figure uses the    40
        student answers to survey question 1 noted
        above, where each music type is a variable.       30

        The bar graph shows the frequencies of students   Number of Students
        who like and dislike each type of music.  From    20
        this graph, it is evident that Rock has the highest
        number of students in the class responding to
        yes, that they like it. The second highest is Rap   10
        followed by Classical. Thus, the graph suggests
        that Rock, Rap and Classical are the most liked    0  Classical   Rap     Bollywood    Pop       Rock
        music among  students.  Responses to  survey
        question 2 can be analysed to see what students                      Grade 8  Grade 9  Grade 10
        favourite type of music is.                                           Type of Music

          152   Touchpad Data Science-X
   149   150   151   152   153   154   155   156   157   158   159