Question

Avery measured a line to be 14.7 inches long. If the actual length of the line is 14.5 inches, then what was the percent error of the measurement, to the nearest tenth of a percent?

Answer 1

1.4%

Explanation:

Avery's error was ...

measured - actual = 14.7 in - 14.5 in = 0.2 in

As a fraction of the actual length, that is ...

(0.2 in)/(14.5 in) × 100% ≈ 1.4%

The measurement error was about 1.4%.