Find the mean salary of 60 workers of a factory from the following table:


Salary (in Rs)



Number of workers



3000


4000


5000


6000


7000


8000


9000


10000



16


12


10


8


6


4


3


1



Total



60



Calculation of mean:


Salary (in Rs)


Xi



No. of workers


(fi)



(fixi)



3000



16



48000



4000



12



48000



5000



10



50000



6000



8



48000



7000



6



42000



8000



4



32000



9000



3



27000



10000



1



10000




∑fi = 60



∑fixi = 305000



Therefore,


Mean=


Thus, mean salary of 60 workers is Rs 5083.33(approx)


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