Mark and Matthew signed up for the 5k walk/run race. They predict it will take them 60 minutes to complete the race. Mark and Matthew finished the race in 53 minutes. What is the percent error? Round to the nearest tenth.
Step 1: Calculate the absolute error.
The absolute error is the absolute difference between the predicted time and the actual time.
Absolute Error = | Actual time - Predicted time |
Absolute Error = | 53 - 60 |
Absolute Error = 7
Step 2: Calculate the percent error.
The percent error is the absolute error divided by the predicted time, then multiplied by 100.
Percent Error = (Absolute Error / Predicted time) * 100
Percent Error = (7 / 60) * 100
Percent Error = 11.67
Rounding to the nearest tenth, the percent error is 11.7.