Question

Ann Landers – who wrote a daily advice column appearing in newspapers across the country – once asked her readers, "If you had it to do over again, would you have children?" Of the more than 10,000 readers who responded, 70% said no. (I’m certain your parents would say yes!) What does this show?

Answer 1

It shows that the survey is meaningless because of voluntary response bias.

Explanation:

This survey in the question provides a very good example of voluntary response bias and this often overrepresents negative opinions. Now, the people who chose to respond were most likely parents who were very unhappy, and so, there is very little chance that the 10,000 respondents were representative of the population. Knowing more about her readers, or taking a sample of the sample, would not have helped.

Thus, we can conclude that ;The survey is meaningless because of voluntary response bias.