Why is the replacement level for population considered 2.1 and not 2?

1.03K views

I understand that many women will not have kids or will have only one kid, or that child mortality is involved but still a fertility rate of 2 means that ON AVERAGE every woman will have 2 kids. This means that every woman and man will be replaced, including the children that die young if the rate of 2 lasts (the newborn females will also have on average two kids). So why isn’t a fertility rate of 2 enough to replace the population?

In: 701

28 Answers

Anonymous 0 Comments

Because not all children make it to reproductive age, or find a mate/reproduce once they get there.

If each woman only produced exactly 2 offspring, then on average there would not be enough to replace the previous generation AND compensate for the ones who fail to have children of their own.

You are viewing 1 out of 28 answers, click here to view all answers.