A student estimated a mass to be 250g, but upon carefully measuring it, found the actual mass to be 240g. What is the percent error?

1 Answer
Sep 26, 2017

Answer:

#~~4.1 bar6%#

Explanation:

To find the percent error, we use this formula:
#P_%=|(e-t)/t|*100#, where #P_%# is the percent error, #e# is the experimental or calculated value and #t# is the theoretical or known value.
http://astro.physics.uiowa.edu/ITU/glossary/percent-error-formula/

We have 2 known values, so plug them in to get
#P_%=|(250-240)/240|*100#

#P_%=|10/240|*100#

#P_%=|1/24|*100#

#P_%=100/24#

#P_%~~4.1bar6#, therefore the percentage error is roughly 4.1#bar6# percent.

I hope I helped!