Multiple choice question on the absolute uncertainty?

[nchin]

An experiment is performed to determine a physical quantity and 10 trials are made. The absolute uncertainty in the quantity can be given by

a. the mean of the data
b. the standard error of the data
c. None of the above

I'm leaning more towards b because absolute uncertainty has to deal with error in measurements or calculation. am i right?

nvm my answer was correct.

 

[Simon Bridge]

"absolute uncertainty" is another way of saying "standard error" yes.