Pew Research Center is a nonpartisan, nonadvocacy fact tank that informs the public about the issues, attitudes and trends shaping the world.

Bayes' theorem is a statistical formula used to calculate conditional probability. Learn how it works, how to calculate it ...

Analysis of CBS News, DHS detention stats, and media narratives on immigration and news outlets controversies.

One in three adults experiences insomnia symptoms at some point in their lifetime. Chronic insomnia lasts at least three times a week for three months or longer. Insomnia is often found in older ...

A century ago, two oddly domestic puzzles helped set the rules for what modern science treats as "real": a Guinness brewer charged with quality control and a British lady insisting she can taste ...

Statistical models predict stock trends using historical data and mathematical equations. Common statistical models include regression, time series, and risk assessment tools. Effective use depends on ...

Federal statistical agencies face increasingly overt politicization by the Trump Administration on top of chronic underinvestment, uncertainty, and recent and proposed budget cuts, all of which ...

President Donald Trump claimed without evidence that the massive revisions to the latest jobs report constituted a “scam,” accusing one of the top overseers of government statistics of cooking the ...

The federal statistical system is experiencing competing pressures for change. On the one hand, for confidentiality reasons, much socially valuable data currently held by federal agencies is either ...