In presidential elections, even the smallest changes in horse-race poll results seem to become imbued with deep meaning. But they are often overstated. Pollsters ...
NBC News’ Carrie Dann explains how we get our polling numbers together and breaks down the margin of error.May 31, 2016 © 2025 NBCUniversal Media, LLC ...
Andrew Gelman, a professor in the departments of statistics and political science at Columbia University, explains. A "3 percent margin of error" means that there is a 95 percent chance that the ...
I am a statistician, and part of my job is to make inferences and predictions. With unlimited time and money, I could simply test or survey the entire group of people I am interested in to evaluate ...
MARGIN OF ERROR….Teagan Goddard sez: According to a new Pew Research poll, Sen. Barack Obama’s national lead over Sen. John McCain has disappeared. The race is now a statistical tie, with Obama barely ...
How four pollsters, and The Upshot, interpreted 867 poll responses: You’ve heard of the “margin of error” in polling. Just about every article on a new poll ...
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