---
title: "Video Explainer: Understanding random sampling for public opinion surveys"
description: "The first video in our \"Methods 101\" series is about random sampling, a concept that undergirds all probability-based survey research. Here's how it works."
date: "2017-05-12"
authors:
  - name: "No Author"
url: "https://www.pewresearch.org/methods/2017/05/12/video-explainer-understanding-random-sampling-for-public-opinion-surveys/"
---

# Video Explainer: Understanding random sampling for public opinion surveys

The first video in our "Methods 101" series is about random sampling, a concept that undergirds all probability-based survey research. Here's how it works.

https://www.youtube.com/watch?v=sonXfzE1hvo