Question

define relative error / fractional error​

Answer 1

Answer:

For example if you know a length is 0.428 m ± 0.002 m, the 0.002 m is an absolute error. The relative error (also called the fractional error) is obtained by dividing the absolute error in the quantity by the quantity itself. The relative error is usually more significant than the absolute error.

Answer 2

Answer:

Fractional error: Fractional error is the value of the error divided by the value of the quantity: X / X. The fractional error multiplied by 100 is the percentage error. Everything is this section assumes that the error is "small" compared to the value itself, i.e. that the fractional error is much less than one.

Relative error: Relative error is a measure of the uncertainty of measurement compared to the size of the measurement. It's used to put error into perspective. ... Relative error is also known as relative uncertainty or approximation error.

Explanation:

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