In statistics, error refers to the difference between the value which has been computed and the correct value.

Absolute error is the magnitude of how far off a measurement is from a true value or an indication of the uncertainty in a measurement.

Errors are brought about by rounding off values, truncation just to name a few.

**Formula to calculate absolute error.**

**Example:**

Tobby’s actual mass is 68Kg. His measured mass is 68.3 Kg. Determine the absolute error in his mass.

Thus, the absolute error is 0.3 Kg.