Absolute percent error

Answer 1

Absolute percent error is the Percent Difference between two values.

Applying the equation for Absolute error.

For example: 21.571 is the True value 20.000 is the Recorded Value.

Thus: (Recorded Value) - (True value) = Absolute error (21.571) - (20.000) = 1.571

We modify this to match the following:

(Recorded Value ) - (True value) / True value * 100

This will give us a percent error of:

(20.000 - 21.571) / 21.571 *100 = -7.28%