The Dark Side of Confidence Levels. A 95% level of confidence means that 5% of the surveys will be off the wall with numbers ...

How do I know if a candidate’s lead is ‘outside the margin of error’? News reports about polling will often say that a candidate’s lead is “outside the margin of error” to indicate that a candidate’s ...

As the director of the Quinnipiac University Poll, which has been taking the pulse of the public on policy issues and elections for the past 30 years, I’ve noted that people have been paying ...

Doug Schwartz is the director of the Quinnipiac Poll, Quinnipiac University. This article is republished from The Conversation under a Creative Commons license.

Hold your breath and make sure you vote, because the result is likely to be a squeaker.

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August's jobs report fell short of economist expectations, with 142,000 jobs being added to the US labor market, below the anticipated 165,000. When factoring in downward revisions to previous ...

A version of this article appears in print on , Section A, Page 2 of the New York edition with the headline: Where Polls Can Mess Up (and How to Fix It). Order Reprints | Today’s Paper | Subscribe ...