# How Do You Calculate Relative Error?

To calculate relative error of an object, for example a desk, you measure the whole length by using a long measuring tape, a pen and paper. The absolute error of a 30centimeters desk will be 5centimeters. The smallest unit marked on the meter stick is 2 centimeters so that your measurement is accurate to within absolute error of 2 centimeters, divide the absolute error by the real measurement of the desk. The relative error is then computed by dividing the absolute error by the true value.
Q&A Related to "How Do You Calculate Relative Error?"
 1. To begin, a measurement has to take place: counting the money in a coin jar, measuring the length of a desk, so on and so forth. After determining what needs to be measured, the http://www.ehow.com/how_4425529_calculate-relative...
 1. Calculate the absolute error in one of two ways: First method: Subtract the experimental value you got with your own measurements from the actual, or "real" measurement http://www.wikihow.com/Calculate-Relative-Error
 to ensure your experiment is precise and to prevent error to happen during experiment. http://wiki.answers.com/Q/Why_do_you_need_to_calcu...
 I bet you did not notice that there is an absolute value. symbol around the difference. |measured value - actual value|. You may do it either way then if you get a negative answer http://answers.yahoo.com/question/index?qid=201306...