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Uncertainity Measurement

  1. Dec 7, 2008 #1
    1. The problem statement, all variables and given/known data

    I have no idea how to calculate this:

    Calculate the uncertainity (limit error) when you convert minutes to hours:


    Minutes____Hours__
    10.0 0.16
    20.0 0.33
    30.0 0.5



    2. Relevant equations


    They've given me like

    Time Elapsed in minutes: tm ± 0.1 (min)

    Distance Traveled: d ± 0.1 (km)
    1. The problem statement, all variables and given/known data



    2. Relevant equations



    3. The attempt at a solution
     
  2. jcsd
  3. Dec 7, 2008 #2

    LowlyPion

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    What happens when you multiply 60 by the numbers in your table?

    What differences do they exhibit relative to the original numbers?
     
  4. Dec 8, 2008 #3
    so should i say the uncertainity is tm ± 0.4 (h) ????
     
  5. Dec 8, 2008 #4

    LowlyPion

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    Is that what it works out to?

    If so ...
     
  6. Dec 8, 2008 #5
    well if u multiply 0.16 x 60= 9.6 but the actual value is 10.0 so its off by 0.4 . As you go up the table the uncertainty becomes smaller and smaller
     
  7. Dec 8, 2008 #6

    LowlyPion

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    Then ±.4 is the largest absolute error so that would be the greatest uncertainty I'd say.

    Expressed as a percentage that would be more like (.4/10) or ± 4%.
     
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