Q15 of 33 Page 14

The following frequency distribution gives the monthly consumption of electricity of the consumers of a locality. Find the median, mean and mode of the data and compare them.





=137.05


We have, N= 68,


N/2 = 34


Hence, medium class =125- 145, such that:


l=125, f’=20, f=22, h=20




=137


Here, we may observe that maximum class frequency is 20 belonging to the class interval 125-145.


So, modal class= 125-145


Lower limit, l= 125


f0=13, f2=14, f=20, h = 20



=



=135.77


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