Arnold Lau Archives

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reportMar 26, 2020

Exploring survey data with the pewmethods R package

This post provides tips on recoding and collapsing survey data and displaying weighted estimates of categorical variables.
reportMar 26, 2020

Introducing pewmethods: An R package for working with survey data

Our new R package contains various functions that we use in our day-to-day survey work.
reportFeb 18, 2020

Assessing the Risks to Online Polls From Bogus Respondents

While the growth of online interviewing is a prominent trend in polling, there is variation within that trend in how researchers recruit respondents. This study finds that sourcing affects data quality.
short readsSep 3, 2019

Why survey estimates of the number of Americans online don’t always agree

How many U.S. adults use the internet? There are a lot of sources with answers to this question. Yet these different sources can be tricky to reconcile.
reportMay 9, 2019

When Online Survey Respondents Only ‘Select Some That Apply’

when designing an online survey questionnaire, there is more than one way to ask a respondent to select which options in a series applies to them.
reportNov 13, 2018

Comparing MRP to raking for online opt-in polls

In a recent study about online opt-in polling, Pew Research Center compared a variety of weighting approaches and found that complex…
reportJan 26, 2018

For Weighting Online Opt-In Samples, What Matters Most?

A growing share of polling is conducted with online opt-in, or nonprobability, samples. This trend has raised some concern within the industry because, while low participation rates pose a challenge for all surveys, the online opt-in variety face additional hurdles.