7, 9, 10, 12, 14, 16, 17
You can find that the range is ten by
subtracting the largest number (17) by the
smallest number (7) which leaves you with 10.
You can find the mean by crossing off a
number from each side, one at a time, until you
land on the middle which is 12. I hope this
helps, let me know if you have any questions!