本题目来源于试卷: Kognity IB Physics A.0 Measurements & Uncertainty，类别为 IB物理学
[单选题]
A student measures a distance four times. cl++17xqcwda b g,q7oThe readin eth9.x3ih3j m9/ci)gr/jlvigs are 37.8 cm, 37.9 cm, 38.1 cm, 38.2 cm. What is the best i)g.jer hmx vit3jlhci/3/ 99 estimate of this measurement?
A. $37.8 \pm 0.2 \; cm$
B. $37.8 \pm 0.4 \; cm$
C. $38.0 \pm 0.2 \; cm$
D. $38.2 \pm 0.4 \; cm$
参考答案: C
本题详细解析:
The mean of the measurements is 38.0 cm. The g+1s6jopggm8f1vh v1 extremes (37.8 cm and 38.2 cm) are both 0.2 cm away from the mean. So C is the correct ans6 p fmshg 1gv1j+8o1vgwer.
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