Answer :

Observe that, from the given data:

The maximum class frequency, here, is 33 and the class corresponding to this frequency is 550 – 650.


So, this implies that,


Modal class = 550 – 650


Mode of such grouped frequency distribution is given by,



Where,


l = lower limit of the modal class = 550


f0 = frequency of the class preceding the modal class = 12


f1 = frequency of the modal class = 33


f2 = frequency of the class succeeding the modal class = 17


c = size of class interval (the class intervals are same) = 100


Substituting the values l = 550, f0 = 12, f1 = 33, f2 = 17 and c = 100 in the formula of mode. We get






Mode = 550 + 56.76


Mode = 606.76


Thus, the modal wage of an employee is Rs. 606.76.


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