[steve-b]

One of the drives came from an ATM machine, and the vast majority of card numbers came from that drive.

Today's Statistics 101 lesson: This is an example of why the median is often more meaningful than the mean.

[fnord]

One of the drives came from an ATM machine, and the vast majority of card numbers came from that drive.

Today's Statistics 101 lesson: This is an example of why the median is often more meaningful than the mean.

Don't forget the mode! (which in this case might have a value of zero or one)