측정의 종합 오차 구하기
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어떤 측정에서 사용된 세 개의 그램 무게추들의 오차는 각각 X₁=2μg, X₂=4.5μg, X₃=-3μg였습니다. 그렇다면 이번 측정의 전체 오차는 얼마일까요? 이건 어떻게 계산하나요?
응응, 그러니까 다 합치는 거지?
(X1+X2+X3)/3=1.17인가, 아니면 (X1+X2+X3)=3.5인가?
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