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MEDIAN: (frequency Distribution Series):
                                 (Class Interval Series)

                                     Wages         f         cf
                                      (X)                             1.  Find Cumulative Frequency (cf)
                                     0 – 100       2         2        2. Median                 th
                                                                                               n
                                                                           Class    =  Size of   item
                                                                                               2
                                                                                              
                                   100 – 200       1         3
                                                                               th
                                                                                               th
                                                                        = (10/2)  item =      5  ITEM
                                   200 – 300       3         6
                                                                       th
                                                                      5  item lies in Cumulative Frequency 6
                                   300 – 400       3         9
                                                                      Hence Median Class = 200 – 300
                                   400 – 500       1         10       6.  Apply formula
                                                           N = 10             n
                                                                               −  cf
                                                                              2
                                                                         =
                                 l = 200                              Ml +       f    x i
                                                                           1
                                  1
                                 cf = 3
                                                                 10
                                 f = 3                              −  3
                                                                  2
                                                             =
                                                          M 200 +     3     x 100
                                                                                           Median = 266.67


                 Mode
                 In statistics, the mode is the value that appears most often in a given list of numbers.
                 INSPECTION METHOD


                                MODE (Individual Series):                          Inspection
                                                                                     Method
                                   Marks    Marks
                                     2        2
                                                    Two times
                                     5        2
                                     7        3     One time
                                     5        5                       Arrange the Data in Ascending Order
                                     6        5     Three times
                                     2        5
                                     5        6     One time          By  Inspection  of  the  Data  it  is  clear
                                     7        7                       that the value ‘7’ occurs most number
                                                                      of times in the series i.e. 4 times
                                     3        7     Four times
                                     7        7
                                     7        7                       Hence Mode = 7












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