How do you find absolute error, when finding an average of quantities?

Question

Hi, this is an important question, but there are no answers on it that don't involve complex statistics info..i am doing mechanics and not statistics for maths, so if anyone could help please do :)

When u are given say 3 quantities and their errors

A +- 0.1 B +- 0.2 C +- 0.3

And u r asked to find absolute error, how on earth do you do it? Please explain with a bit of detail ..thank you!

Answer 1

How are you combining those quantities? If you're adding or subtracting them then the absolute error is simply the sum of all the errors (so it'll be +/- 0.6).