For example , each of the three populations { 0 , 0 , 14 , 14 } , { 0 , 6 , 8 , 14 } and { 6 , 6 , 8 , 8 } has a mean of 7 .
For another example , each of the three groups { 0 , 0 , 14 , 14 } , { 0 , 6 , 8 , 14 } and { 6 , 6 , 8 , 8 } has an average ( mean ) of 7 .