I'm doing measurements & their uncertainty and I can't find this. Does anyone know where I can look? "Percent error is calculated by dividing the _____of the error by the accepted value and then multiplying by _______.
Percent error is calculated by dividing the value of the error by the accepted value and then multiplying by 100.
To find the percent error in measurements, you can use the formula:
Percent error = (|Measured Value - Accepted Value| / Accepted Value) x 100%
To use this formula, you need to know the measured value and the accepted value. The measured value is the value you obtained from your measurement, while the accepted value is the reference value or the expected value.
Here's an example to illustrate how to use the formula:
Let's say you measured the length of an object to be 20 cm, but the accepted length of the object is known to be 18 cm. Now, let's calculate the percent error:
Percent error = (|20 cm - 18 cm| / 18 cm) x 100%
= (2 cm / 18 cm) x 100%
≈ 11.11%
So, in this case, the percent error is approximately 11.11%.
To find more information about measurements and their uncertainty, you can refer to textbooks, lecture notes, or online resources on topics like experimental physics, metrology, or uncertainty analysis in measurement. Additionally, websites and databases of scientific institutions or educational resources can also provide valuable information on this subject.