Q&A for How to Calculate Absolute Error

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  • Question
    How do I find absolute error of any equation?
    Donagan
    Top Answerer
    An equation does not contain an "absolute error." Re-read the introduction above.
  • Question
    How do I find the root value of a 6-digit number?
    Donagan
    Top Answerer
    If you're asking about square roots, see Calculate a Square Root by Hand .
  • Question
    What is the absolute error in 2.11?
    Donagan
    Top Answerer
    As explained above, the concept of "absolute error" involves both a measured value and an "actual" value.
  • Question
    How do I calculate the estimated absolute value when the true value is not given?
    Venatrixx
    Community Answer
    You'll need to know how your value was measured. For example, if you're measuring weight, and the smallest measuring unit is 1 pound, the most your measured value could be off by is .5 pound. Otherwise, you would have ended up with a different value. Use this maximum possible error as the absolute error.
  • Question
    A person's weight is measured as 79.3kg. What is the absolute error of this measurement?
    Donagan
    Top Answerer
    You would need to know the person's actual weight, and then find the difference between that weight and the measured weight.
  • Question
    If data fall within a range, how is the absolute error calculated?
    Donagan
    Top Answerer
    The absolute error would have to be expressed as a range, too. Find the difference between the actual value and the highest measured value. Then find the difference between the actual value and the lowest measured value. Then express the absolute error as a range between the larger difference and the smaller difference.
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