CTET 2 Math and Science Sep 2015 Paper

Mean $=\frac{6+3+9+5+1+2+3+6+5+1+3}{11}=\frac{44}{11}=4$
Arrange the given date in increasing way
1,1,2,3,3,3,5,5,6,6,9
There are 11 numbers in the list, so, the middle one will be the $\left(\frac{11+1}{2}\right)=6\mathit{t}\mathit{h}$
Number:3
So, the median is 3.
Mode = 3 (Because 3 is repeated more times than other)
Sum$=4+3+3=10$