오차 범위
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정의
참값이 존재할 것으로 예상되는 측정값 또는 추정값의 상하 범위로, 보통 명시된 신뢰 수준으로 표현한다.
설명
A poll reporting 52% ± 3% has an error margin of 3 percentage points at 95% confidence, meaning the true value likely lies between 49% and 55%. In physical measurements, a laboratory scale might report 125.4 ± 0.1 g, indicating the true mass is within 0.08% of the reading. Error margins quantify uncertainty without hiding it.
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