I'm afraid this sentence is completely incomprehensible.
it means...that you mean what you mean:)
1.not nice 2.rude and disrespectful to other people 3.opposite of nice 4.cruel 5.harsh through words or actions
it means average distance which equals the total of each distance divided by how many sets of numbers you previously added by.
The mean distance is the same as the mean of a set of numbers,but this time, instead of them just being numbers, they're lengths. You just simply add up all the numbers and divide the total length,...