Percent Error Practice

Front

What is percent error?

Back

Percent error is a measure of how inaccurate a measurement is, expressed as a percentage of the actual value. It is calculated using the formula: Percent Error = |(Estimated Value - Actual Value)| / |Actual Value| * 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 multiply by 100.

Front

If the estimated attendance at a game is 15,000 and the actual attendance is 12,500, what is the percent error?

Back

20%.

Front

Zac measures his flower bed area as 10 square feet, but the actual area is 10.6 square feet. What is his percent error?

Back

6%.

Front

Lindsey thinks renting a scooter costs $100, but it actually costs $150. What is her percent error?

Back

33%.

Front

Brittany wants to buy an umbrella for $60, but it costs $50. What is her percent error?

Back

20%.

Front

What is the formula for calculating percent error?

Back

Percent Error = |(Estimated Value - Actual Value)| / |Actual Value| * 100.

Front

If a student measures a length as 12 cm, but the actual length is 14.25 cm, what is the percent error?

Back

15.79%.

Front

What does a percent error of 0% indicate?

Back

A percent error of 0% indicates that the estimated value is exactly equal to the actual value.

Front

Why is it important to calculate percent error?

Back

Calculating percent error helps to assess the accuracy of measurements and estimates, which is crucial in scientific experiments and real-world applications.