71.9k views
2 votes
What is the percentage error for a mass measurement of 17.7g, given that the correct value is 21.2g?

User Hrskrs
by
8.2k points

1 Answer

7 votes
16.5% First, determine the total error by subtracting the accepted value from the value you measured. e = 17.7 - 21.2 = -3.5 Then divide the error by the accepted value. e = -3.5/21.2 = -0.165 = -16.5% Sometimes it's useful to keep track of if the error is positive, or negative. But for this case, we'll just go with the positive percentage. So the answer is 16.5% Key thing to remember. You divide by the CORRECT value to get the percentage.
User Rbasniak
by
8.6k points
Welcome to QAmmunity.org, where you can ask questions and receive answers from other members of our community.