Question

Does this set of data have any outliers?
Data: 1, 2, 2, 4, 6, 6, 7, 8, 9, 10, 12, 13, 16, 16, 18.

Answer 1

No, an outlier is a number that is not even close to any of the others. If it had a 30, the 30 would probably be an outlier

Answer 2

if max value minus the min value gets you "close" to the middle value, then definitely no outlier
if you had something like
1 2 3 5 31
the 31 would be an outlier.