17, 10, 12, 11, 10, 15, 14, 11, 12, 13

By arranging the given data in ascending order we will get,


10, 10, 11, 11, 12, 12, 13, 14, 15, 17


Values (x)



Frequency (f)



Cumulative frequency



fx



10



2



2



20



11



2



4



22



12



2



6



24



13



1



7



13



14



1



8



14



15



1



9



15



17



1



10



17




N = 10




∑fx = 125



We have;


N = 10 (even number)


Median =





Now,


∑fx = 125 and ∑f = N = 10


Mean =


Hence,


Mode = 3(median) – 2 (mean)


= 3×12 - 2×12.5


= 36 – 25


= 11


5