Question

You estimate that there are 45 marbles in a jar. The actual amount is 64 marbles. Find the percent error. Round to the nearest tenth of a percent if necessary.

Answer 1

percent error ≈ 29. 7 %

Explanation:

percentage error = absolute error / exact value × 100

where

absolute error = |approximate value - exact value|

approximate value = 45

exact value = 64

absolute error = |45 - 64| = 19

percentage error = absolute error / exact value × 100

percentage error = 19/64 × 100

percentage error = 1900/64

percentage error = 29.6875 %

To the nearest tenth

percent error ≈ 29. 7 %