There is no meaningful average wen data are categorical (qualitative). Also, the arithmetic mean is not a good measure of central tendency when the data distribution is skewed.
A thesaurus is a book that's useful for finding synonyms.
A Mercator map because it is most useful in finding direction. ;)
They are useful in finding the least common denominators.
Most caves are small but some are very large and complex. There is no standard size and finding an "average" is not very useful.
nothing useful
finding radiation by matter
i need a answer!!
pretty much ANYTHING
mercator
i dont have friends
B: synonyms
The value of Pi