Dismiss Notice
Join Physics Forums Today!
The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

I Uncertainty in Scale Measurement

  1. Mar 23, 2016 #1
    Having a bit of trouble estimating total scale uncertainty.

    In this experiment, I used four precision weights (error << scale resolution). Each weight has a known mass and is weighted on a scale 20 different times. Therefore, for each weight, I have a mean scale measurement, a standard deviation, and the true value of the weight. Each weight measures a different range of the scale, for example, 250 g, 500 g, 750 g, 1000 g.

    How can I go about estimating the total scale uncertainty? What I am looking for is a method to produce a total uncertainty for any given measurement. If I place an random object on the scale, say an apple that weighs 500 g, I can say that the scale is accurate to +/- ___ grams.

    Any advice? I am running monte carlo simulations, but having a difficult time quantifying total error (not sure which method to use). I feel like there should be a method using fundamental statistics to determine this uncertainty.
  2. jcsd
  3. Mar 23, 2016 #2


    Staff: Mentor

Share this great discussion with others via Reddit, Google+, Twitter, or Facebook

Have something to add?
Draft saved Draft deleted