Page 207 - Data Science class 10
P. 207

PRACTICAL QUESTIONS




                                                                                                      Inter-Disciplinary



               1.  Find the mean of the following series:
                  3, 7, 11, 15, 19, 23, 27, 31, 35
             Ans.   Mean  = Sum of the elements/number of elements
                           (3 + 7 + 11 + 15 + 19 + 23 + 27 + 31 + 35)
                         =
                                               9
                         = 19
               2.  What is the median of the following dataset?

                  16, 8, 24, 5, 7, 12, 13, 46, 19, 16, 15, 20, 50, 56, 59, 10, 23, 25, 30, 26
              Ans.  Arrange the dataset in ascending order
                  5, 7, 8, 10, 12, 13, 15, 16, 16, 19, 20, 23, 24, 25, 26, 30, 46, 50, 56, 59
                  Dataset has 20 elements. So the median is:
                             (10th element + 11  element)
                                              th
                  Median  =
                                          2
                             (19 + 20)
                          =     2      = 19.5
               3.  The daily wages of some employees are given below:
                     Wages

                       100
                       200
                       300
                       400
                       500
                       600

                  Find the mean from the above data.
                          (100 + 200 + 300 + 400 + 500 + 600)
              Ans.  Mean =
                                           6
                          2100
                        =        = 350
                            6
               4.  The daily wages of some employees are given below:
                  16, 8, 24, 5, 7, 12, 13, 46, 19, 16, 15, 20, 50, 56, 59, 10, 23, 25, 30, 26

                     Wages
                       500
                       200

                       600
                       300
                       100
                  Find the mean from the above data.



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