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Democratic Leaders Get Worst Polling Result in Over Two Decades (www.newsweek.com)

submitted 22 hours ago by Sunshine@lemmy.ca to c/usa@midwest.social

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[–] Saleh@feddit.org 1 points 10 hours ago

Thats a perfectly reasonable sample size and margin of error. The margin of error for a given confidence level and standard deviation is proportional to 1/sqrt(n) so in order to get the margin of error down from 4% points to 2% they would need to quadruple the number of people polled. However this is worthless if you cannot attribute for systematic errors with a better precision.