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SAI International School


                                                           Grade-VII


                                                         Mathematics

       WORKSHEET – 1


       Chapter-3: Data Handling

       Section A


       Choose the correct option:




        1         The Arithmetic Mean of 36, 35, 50, 46, 60, 55 is ______.                                       1

                  (A) 45    (B) 46   (C) 47   (D) 48


        2         Any raw information which we collect to know about it and to compare certain things is         1
                  called _______

                  (A) Mode    (B) data   (C) graph   (D) mean

        3         What is the average of first 5 even numbers?                                                   1


                  (A)7    (B)6   (C) 8   (D) 30

       Fill in the Blanks:

        4         ______ is the range of the data.7, 11,2,1,9                                                    1

        5         __________ is the median of the following data:                                                1
                      28, 46, 75, 36, 18, 20, 25



       Answer the following

        6         If 12 numbers have a mean of 20, then what is the sum of 12 numbers?                           1

        7         Number of times a particular observation occurs in a given data is called ?                    1


       Section B

        8         Ashish studies for 4 hours, 5 hours and 3 hours respectively on three consecutive days.  2
                  How many hours does he study daily on an average?

        9         The scores in mathematics test (out of 25) of 15 students is as follows:                       2

                         19, 25, 23, 20, 9, 20, 15, 10, 5, 16, 25, 20, 24, 12, 20


                  Find the mode and median of this data. Are they same?
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