Making Online Polls More Accurate: Statistical Methods Explained

Fuente: arXiv
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Auteurs principaux: Arletti, Alberto, Tanturri, Maria Letizia, Paccagnella, Omar
Format: Preprint
Publié: 2025
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author Arletti, Alberto
Tanturri, Maria Letizia
Paccagnella, Omar
author_facet Arletti, Alberto
Tanturri, Maria Letizia
Paccagnella, Omar
contents Online data has the potential to transform how researchers and companies produce election forecasts. Social media surveys, online panels and even comments scraped from the internet can offer valuable insights into political preferences. However, such data is often affected by significant selection bias, as online respondents may not be representative of the overall population. At the same time, traditional data collection methods are becoming increasingly cost-prohibitive. In this scenario, scientists need instruments to be able to draw the most accurate estimate possible from samples drawn online. This paper provides an introduction to key statistical methods for mitigating bias and improving inference in such cases, with a focus on electoral polling. Specifically, it presents the main statistical techniques, categorized into weighting, modeling and other approaches. It also offers practical recommendations for drawing estimates with measures of uncertainty. Designed for both researchers and industry practitioners, this introduction takes a hands-on approach, with code available for implementing the main methods.
format Preprint
id arxiv_https___arxiv_org_abs_2503_15395
institution arXiv
publishDate 2025
record_format arxiv
spellingShingle Making Online Polls More Accurate: Statistical Methods Explained
Arletti, Alberto
Tanturri, Maria Letizia
Paccagnella, Omar
Applications
Online data has the potential to transform how researchers and companies produce election forecasts. Social media surveys, online panels and even comments scraped from the internet can offer valuable insights into political preferences. However, such data is often affected by significant selection bias, as online respondents may not be representative of the overall population. At the same time, traditional data collection methods are becoming increasingly cost-prohibitive. In this scenario, scientists need instruments to be able to draw the most accurate estimate possible from samples drawn online. This paper provides an introduction to key statistical methods for mitigating bias and improving inference in such cases, with a focus on electoral polling. Specifically, it presents the main statistical techniques, categorized into weighting, modeling and other approaches. It also offers practical recommendations for drawing estimates with measures of uncertainty. Designed for both researchers and industry practitioners, this introduction takes a hands-on approach, with code available for implementing the main methods.
title Making Online Polls More Accurate: Statistical Methods Explained
topic Applications
url https://arxiv.org/abs/2503.15395