How do the united nations get the exact the 211,000 population per day,right.?

Question

How do the united nations get the exact the 211,000 population per day,right.?

Answer 1

It is an estimate.

There are variations in population growth depending on war, famine and the like.

They do have access to figures from all countries regarding birth and death rates, but some countries are better than others at recording them.

Answer 2

Well, first off they take the overall population and then..... oh ! who am I kidding. ? I don't understand the question. !!!

Answer 3

thye never get it right it is a educated guess based on the facts available at the time, when dealing with population a lot of variables are involved and it is not exact calculation at all.