# The median is called a resistant measure, whereas the mean is a non-resistant measure. What's a resistant measure?

Imagine a group of 101 people who have an average (= mean ) of $1000 in the bank. It also happens that the middle man (after sorting on bank balance) also has$1000 in the bank. This median means, that 50(%) have less and 50 have more.
Now one of them wins a lottery prize of $100000, and he decides to put it in the bank. The mean will immediately go up from$1000 to near \$2000, as it is computed by dividing total amount by 101.