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SAI International School
                                                 Sub – Mathematics
                                                       Class - V
                                               Topic – Data Handling
            Sub-topic 14.1 : - Introduction to Data Handling & Tally Graph

            Introduction:
            The information collected is known as data.
            The collection of information in the form of numerical figures is known as numerical data.
            We organise and represent the data in various ways.
            The various ways are:
                1.  Tally Graph(Tally Table)
                2.  Pictograph
                3.  Bar Graph
                4.  Pie Chart(Circle Chart)
                5.  Line Graph

            Let us discuss:
                1.  Tally Graph(Tally Table)
                ➢  A tally chart is drawn by drawing the number of lines for each value in the data.
                ➢  The number of times an observation occurs in the data is called the frequency.
                ➢  The lines used to show the frequency in a data are called tally marks.
                ➢  Tally marks are drawn in a bunch of 5.
                ➢  1 tally mark represents one observation.
                ➢  4 lines (vertical) are drawn side by side to denote 4(IIII). 5 is denoted by crossing
                    the four vertical lines ( IIII )
            Examples:
            4 – IIII
            5 – IIII
            6 – IIII  I
            7 – IIII  II

            Let us learn to draw tally table or tally graph.
            Example 1:
            James made a survey in his society of the favourite colour of his friends. Make a tally
            graph for his survey. The data is given below:
            blue, orange, pink, orange, blue, orange, pink, black, orange, black, blue, black, orange,
            black, pink, blue, orange, orange, pink, black.

            Solution:
            First, we need to make a table:
                                           Favourite colour of James’ friends

            Colour                           Tally Marks                      Frequency
            Blue                             IIII                             4
            Orange                           IIII  II                         7
            Pink                             IIII                             4
            Black                            IIII                             5
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