Everyone, come help quickly! How exactly is the relative error calculated?
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1. The relative error is the difference between two parallel samples divided by the sum of those two samples, that is (A-B)/(A+B). 2. The relative error is the absolute value of the difference between the measured value and the true value divided by the true value; in other words, it is the percentage of the absolute error relative to the true value. We learned the second definition in school, but someone else says it’s the first one. Which one is correct? I’m confused!
Baidu provides 1 explanation; when can 1 be used for calculation?
Use 2 for the calculation; 2 is the formula from the laboratory technician’s manual, and it is reliable
1 It’s definitely not right; many entries on Baidu have a high error rate, and Baidu’s rate of providing misleading information is even higher. Additionally, it would be best for you to review the sections on data processing in analytical chemistry, as well as concepts such as error, deviation, relative error, and relative deviation. There are some terms and concepts that one needs to understand on their own; it’s difficult to explain them clearly just through a post.