Question

what where the purpous of surveys?

Answer 1

The purpose of any survey is to present particular questions to members of the target population,
and then gather responses for analysis.
In general, the purpose of this analysis is to derive insights about the population from which the survey has sampled.
These insights are applied for various purposes, depending on the intentions of the researchers, the results of a survey may contribute to government policy, shape the development of a product, or simply surface attitudes to establish a baseline for discussion.

hope it will help you my friend

Answer 2

A survey helps people to  compare, prove, or explain etc. the community's perspective of a certain subject/or topic. 

For example, you may want to know how many kids in the neighbourhood have phones. You'll have to survey all of the kids and count up the amount.