Percent Error

Front

What is Percent Error?

Back

Percent Error is a measure of how inaccurate a measurement is, compared to the true value. It is calculated using the formula: Percent Error = |Estimated Value - Actual Value| / Actual Value x 100%.

Front

How do you calculate Percent Error?

Back

To calculate Percent Error, subtract the actual value from the estimated value, take the absolute value of the result, divide by the actual value, and then multiply by 100%.

Front

If Nick estimated 60 people would come but only 45 attended, what is the percent error?

Back

33%.

Front

Mr. Nacerino estimated it would take him 48 minutes to run 8 miles, but it took 60 minutes. What is his percent error?

Back

20%.

Front

The estimated deer population in northern Illinois was 17,600, but the actual count was 21,300. What is the percent error?

Back

17.4%.

Front

Sam thinks a book costs $50, but it actually costs $56. What is Sam's percent error?

Back

10.7%.

Front

Jon thinks a burrito costs $7.50, but it actually costs $6.25. What is the percent error?

Back

20%.

Front

What is the formula for calculating Percent Error?

Back

Percent Error = |Estimated Value - Actual Value| / Actual Value x 100%.

Front

What does a high percent error indicate?

Back

A high percent error indicates a significant difference between the estimated value and the actual value, suggesting a poor estimate.

Front

What does a low percent error indicate?

Back

A low percent error indicates that the estimated value is close to the actual value, suggesting a good estimate.