Percent Error Problems

Front

What is percent error?

Back

Percent error is a measure of how inaccurate a prediction or estimate is compared to the actual value, expressed as a percentage.

Front

How do you calculate percent error?

Back

Percent error = |(Actual Value - Estimated Value)| / |Actual Value| × 100%.

Front

If Nyjirah predicted her car payment to be $250 and the actual payment was $275, what is the percent error?

Back

9%.

Front

What does it mean if the percent error is high?

Back

A high percent error indicates that the estimate or prediction was significantly off from the actual value.

Front

If Shaun estimated the attendance at 3,000 and the actual was 2,712, what is the percent error?

Back

11%.

Front

What is the importance of calculating percent error in real-life situations?

Back

Calculating percent error helps assess the accuracy of predictions and improve future estimates.

Front

If a student estimates a volume of 2.4 liters for a container that actually holds 2.5 liters, what is the percent error?

Back

4%.

Front

What is the formula for finding the absolute error?

Back

Absolute error = |Actual Value - Estimated Value|.

Front

If Jeyson predicted 227 students would attend a dance and 250 actually did, what is the percent error?

Back

9.2%.

Front

What is a common application of percent error in science?

Back

Percent error is often used to compare experimental results to theoretical values.