September 27, 2017

Many poll respondents guess wrong on their interviewer’s race or ethnicity

Establishing the interviewer’s perceived race or ethnicity is essential to understanding how it might affect the respondent’s answers to survey questions.

MethodsAugust 16, 2017

How Pew Research Center surveyed 1,000 U.S. Muslims

In a short video, Pew Research Center researchers explain how they produced the Center’s wide-ranging new survey of 1,001 American Muslims.

MethodsAugust 4, 2017

Personal finance questions elicit slightly different answers in phone surveys than online

People polled by telephone are slightly less likely than those interviewed online to say their personal finances are in “poor shape.”

Media & NewsJune 20, 2017

Few mode effects found when Americans are asked about their news consumption habits

A new analysis sheds light on concerns raised among pollsters that the medium by which a survey question is asked – its mode – can affect responses.

MethodsMay 15, 2017

What Low Response Rates Mean for Telephone Surveys

Telephone polls still provide accurate data on a wide range of social, demographic and political variables, but some weaknesses persist.

MethodsMay 12, 2017

How can a survey of 1,000 people tell you what the whole U.S. thinks?

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.

MethodsMay 12, 2017

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.

MethodsMarch 31, 2017

Are Telephone Polls Understating Support for Trump?

An experiment comparing responses to 27 questions fielded on both a telephone and a web survey found no significant mode differences in overall opinion about Trump or many of his signature policy positions.

MethodsFebruary 16, 2017

A basic question when reading a poll: Does it include or exclude nonvoters?

Opinion polls in the U.S. can address the same topic yet reach very different results. There are several reasons this can happen, but we tackle one of the most basic: Did the poll include or exclude the 45% who didn’t vote in November?

Fact TankOctober 25, 2016

Oversampling is used to study small groups, not bias poll results

As oversampling and its possible effect on presidential polls are spotlighted ahead of Election Day, learn more about this practice and how pollsters adjust for it.