The mean of the values given is 6.5.
The mean in mathematics is found by finding the sum of all the values (adding the all together), then dividing the sum by the number of values there are.
If you add all the values given in the set above, you will get 65. There are 10 values, so you take 65 and divide it by 10. Thus getting 6.5 as your answer.
I hope this helps!
