# What is the primary objective of sampling from a population?

What is the primary objective of sampling from a population?
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Explanation:
Sampling from a population is used when the population is too large to collect data from everyone or if getting data from everyone is impractical. The goal when sampling from a population is therefore to get as representative a sample as you can collect. You don't want to over-represent some groups and/or under-represent other groups as this doesn't allow your sample to describe your population well. In addition to this main goal, statisticians also aim to reduce variability within the sample.