Methods 101: What is machine learning, and how does it work?
We explain the basics of machine learning – using computer programs to identify patterns in data – and how it allows researchers at the Center to analyze data on a large scale.
Methods
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Few U.S. adults say they’ve been diagnosed with coronavirus, but more than a quarter know someone who has
Relatively few Americans say they have tested positive for coronavirus antibodies, but many more believe they may have been infected.
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On 75th anniversary of V-E Day, about 300,000 American WWII veterans are alive
World War II service members’ numbers have dwindled from around 939,000 veterans in 2015 to about 300,000 in 2020.
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A third of Americans experienced high levels of psychological distress during the coronavirus outbreak
Distress levels changed little overall from March to April, but this concealed considerable change at the individual level over this period.
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Black imprisonment rate in the U.S. has fallen by a third since 2006
There were 1,501 black prisoners for every 100,000 black adults in 2018, down sharply from 2,261 black inmates per 100,000 black adults in 2006.
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The coronavirus pandemic’s impact on Pew Research Center’s global polling
Our response to the pandemic has included the difficult decision to suspend much of our international survey work until further notice.
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Coronavirus downturn likely to add to high government debt in some countries
For some governments, the debt incurred on COVID-19 relief will add to the considerable red ink already on their ledgers before the pandemic.
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Fast facts on the challenges Americans see for female political candidates as Warren exits 2020 race
In 2018, 59% of U.S. adults said there were too few women in high political offices, including 69% of women and 48% of men who said this.
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Far more Americans see ‘very strong’ partisan conflicts now than in the last two presidential election years
About nine-in-ten Americans say conflicts between Democrats and Republicans are strong or very strong; 71% say these conflicts are very strong.
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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.
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