Question 1069107
 0, 0, 3	mean 1
 0, 0, 5	mean 1.67
 0, 0, 6	mean 2
 0, 3, 5	mean 2.67
 0, 3, 6	mean 3
 0, 5, 6	mean 3.67
 0, 3, 5	mean 2.67
 0, 3, 6	mean 3
 0, 5, 6	mean 3.67
 3, 5, 6	mean 4.67
Sum is 24+4.02=28.02
Divided by 10, the mean of the 10 samples is 2.80
The mean of the population 0,0,3,5,6 is 14/5=2.80
All possible samples from a population with a given sample size will have a mean equal to the population mean.  We call that unbiased.