Is My Calculation of Uncertainty in Measurements Correct?

[Stevedye56]

Hi,

I just had a quick question in regards to the addition/subtraction of quantaties and their uncertainties.

Am i correct in saying (22.4mL plusminus .01mL) + (21.3mL plusminus .01mL)=43.7 plusminus .02mL?

or is it plusminus .01mL ?

Im pretty sure my first answer is correct just looking for a posative verification, thanks for looking.

 

[Astronuc]

Is one familiar with the propagation of uncertainties?

See - http://www.umd.umich.edu/casl/natsci/slc/slconline/UNC1/index.html
for examples.

A statistically more accurate method for uncertainties is the sum in quadrature of the uncertaintieso f individual variables.

http://www.physics.pomona.edu/sixideas/labs/LRM/LR09.pdf

 

[Stevedye56]

thanks for the help