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Relative/Absolute error woes

  1. Jan 30, 2013 #1
    1. The problem statement, all variables and given/known data

    "Which will have a larger absolute measurement error, a larger object or a smaller object?"
    "Which will have a larger relative measurement error, a larger object or a smaller object?"

    2. Relevant equations

    Relative error:
    δ(A)/A = δ(B)/B + δ(C)/C

    3. The attempt at a solution

    Im trying to answer this for my lab report in physics, and I guess im confused by the question.
    Absolute error would be the same regardless of size because its just the amount you measuring tool might be off.
    Relative error since it is a ratio correct? Or since relative error is δ(A)/A or absolute error over the measured/accepted quantity, would it be smaller for larger objects?

    Confusion abound. Please help.
  2. jcsd
  3. Jan 30, 2013 #2


    User Avatar

    Possibly, but it would depend on what you are measuring and how you measure it, too.
    Again, it will depend.
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