#### Answer

The mean is 100.

#### Work Step by Step

The mean of a set of numbers is found by totaling all the numbers, then dividing the total by the number of items in the set. There are 5 numbers in this set.
$(48+72+52+148+180)\div5\longrightarrow$ Add the numbers in parentheses.
=$500\div5\longrightarrow$ Divide to find the mean.
=100