Question

Mean absolute error Δa for \(n\) observations is ______.

Options

• \[\Delta a=\frac{\Delta a_1+\Delta a_2+\cdots+\Delta a_n}{a_m}\]

• \[\Delta a=\frac{|\Delta a_1|+|\Delta a_2|+\cdots+|\Delta a_n|}{n}\]

• \[\Delta a=\frac{a_m}{|\Delta a_1|+|\Delta a_2|+\cdots+|\Delta a_n|}\]

• \[\Delta a=\frac{a_{m}}{n}\]

Answer 1

Mean absolute error Δa for \(n\) observations is \[\Delta a=\frac{|\Delta a_1|+|\Delta a_2|+\cdots+|\Delta a_n|}{n}\].

Explanation:

Mean absolute error is defined as the arithmetic mean of the absolute values of the individual absolute errors.