For which of the following data sets is the mean greater than the median?
1, 1, 2, 3, 5, 8, 13, 21, 34
2, 4, 6, 8, 10, 12, 14, 16, 18
-50, 10, 20, 30, 40, 50, 60, 70, 80
10, 20, 30, 40, 50, 60, 70, 80, 90
