Quantcast
Loading [MathJax]/jax/output/CommonHTML/jax.js

Uncertainty in addition and subtraction

Last modified by
on
Jul 24, 2020, 6:28:07 PM
Created by
on
Jun 7, 2016, 3:45:14 AM
e4=e21+e22+e23
(e1)Experimental Uncertainty 1
(e2) Experimental Uncertainty 2
(e3)Experimental Uncertainty 3

The Uncertainty in Addition and Subtraction calculator computes the uncertainty in addition and subtraction based on the experimental absolute uncertainty in three measurements.

INSTRUCTIONS:   Enter the following:

  • (e1)  This is the experimental absolute uncertainty of one measurement (unit-less).
  • (e2)  This is the experimental absolute uncertainty of another measurement (unit-less).
  • (e3)  This is the experimental absolute uncertainty of a third measurement (unit-less).

Uncertainty in Addition and Subtraction (e4): The uncertainty is returned as a real number.  However, this can be automatically converted to a percentage or decibels via the pull-down menu.

Related Calculators

The Math / Science

The uncertainty in addition and subtraction[1] equation calculates the absolute uncertainty for measurements with absolute uncertainties that are being added or subtracted.

The equation for uncertainty in addition and subtraction is 

  e4=e21+e22+e23

where 

  • e1 is experimental  absolute uncertainty of one measurement in the (unit-less)
  • e2 is experimental absolute uncertainty of another measurement (unit-less)
  • e3 is experimental absolute uncertainty of a third measurement (unit-less)
  • e4 is the absolute uncertainty of the combined absolute uncertainty measurement. 

Related Topics

References

Harris, D., Quantitative Chemical Analysis, 9th Ed., W. H. Freeman,  Pp.52 (2015).

[1] For the Spanish site click here.


This equation, Uncertainty in addition and subtraction, is used in 1 page
  • Comments
  • Attachments
  • Stats
No comments
This site uses cookies to give you the best, most relevant experience. By continuing to browse the site you are agreeing to our use of cookies.