Unverified50% confidenceFactExact time
The standard normal quantile z-value corresponding to the 95% confidence level is approximately 1.96.
1
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50%
Confidence
Long-term
Relevance
8/5/2026
First Seen
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误差范围是什么意思？教你正确解读民调数据的准确性
Related Claims
UnverifiedThe calculation of the margin of error derives from the central limit theorem, with the formula MOE = z × √(p(1-p)/n), where z is approximately 1.96 at the 95% confidence level.75% similarUnverifiedThe per-step accuracy of current top-tier models is approximately between 90% and 95%.74% similarUnverifiedA 95% confidence level means that if the same methodology were used to conduct 100 surveys, approximately 95 of them would produce results falling within the margin of error.71% similarUnverifiedFor normally distributed data, the 1.5×IQR range covers approximately 99.3% of data points.67% similarUnverifiedRaising the confidence level from 95% to 99% (z-value 2.576) will expand the margin of error by approximately 31% for the same sample size.66% similar
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