What does it mean on TV when someone says to someone else "You're about to become a statistic"?

Question

It is usually when they are being held at gun point.

Answer 1

You`re about to become another dead person that will add to the number killed in this way.

Answer 2

Pretty self-explanatory. They're about to contribute to a statistic about whatever subject. In this case, statistic(s) about people who have been killed by using whatever method the murderer used.

Answer 3

this means a person is about to belong to a catagory of people known for a certain thing; in this case the person is about to belong to a category of murdered people.