The units could be:
A) Centimeters, and the data sucks (4.9' to 11')
B) Mixed Units (See Also: "Completely Fucking Wrong").
If this is data you are giving someone would you:
A) Apologize, and give some assurance that the rest is ok
B) Indignently mention that outliers are always meaningless, and its a waste of his time to talk about them.