Question

If a speedometer's absolute error is 1 mph and it measures a speed of 52 mph, what is the relative error of this measurement expressed as a percentage? (Round to the nearest tenth of a percent if necessary.

Answer 1

Relative error = absolute error / measured speed

Relative error = 1/52 = 0.01923

Percent = 0.01923 x 100 = 1.923%

Rounded to nearest tenth = 1.9%