Mean
Add all numbers then divide by total numbers.
Total students = 6
![\operatorname{mean}=(5+8+13+5+3+3)/(6)=(37)/(6)=6.166]()
Round to the nearest tenth = 6.2
Answer: mean = 6.2
Median
List your numbers from smallest to largest and chose the number in the middle.
This is: 3, 3, 5, 5, 8, 13
The middle are 5 and 5, therefore:

Answer: median = 5