Question

Relative (or fractional) error δ a in a measurement is defined as ______.

Options

• \[\delta a=\frac{\Delta a}{a_m}\]

• \[\delta a=\frac{a_m}{\Delta a}\]

• \[\delta a=\Delta a\times a_m\]

• \[\delta a=\frac{\Delta a}{n}\]

Answer 1

Relative (or fractional) error δ a in a measurement is defined as \[\delta a=\frac{\Delta a}{a_m}\].

Explanation:

Relative error is the ratio of the mean absolute error to the mean value of the measured quantity, and it is dimensionless.