Significant Figures in Laboratory Measurements · PhysicsBowl 2014 #2

Physics · mechanics

Problem

In the laboratory, a student makes the following six measurements for the length of an object: 5.055.05 cmcm, 5.065.06 cmcm, 5.075.07 cmcm, 5.065.06 cmcm, 5.075.07 cmcm, and 5.095.09 cmcm. Using the rules of significant digits, which one of the following choices correctly represents how she should express the average length of the object? (A) 55 cmcm (B) 5.065.06 cmcm (C) 5.066‾5.06\overline{6} cmcm (D) 5.075.07 cmcm (E) 5.15.1 cmcm

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