Question

what is a relative error and absolute error​

Answer 1

Answer:

The approximation error in some data is the discrepancy between an exact value and some approximation to it. An approximation error can occur because: the measurement of the data is not precise due to the instruments. or approximations are used instead of the real data.

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Answer 2

Answer:

Relative error is defined as the absolute error relative to the size of the measurement, and it depends on both the absolute error and the measured value. The relative error is large when the measured value is small, or when the absolute error is large. Relative error has no units.

and

The absolute error of the sum or difference of a number of quantities is less than or equal to the sum of their absolute errors.

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