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, use the formula: Percent Error = |(Estimated Value - Actual Value)| / |Actual Value| * 100.

Front

If Zed estimated 350 chips but found 210, what is the percent error?

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Percent Error = |(350 - 210)| / |350| * 100 = 67%.

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If you estimated the Chicago Cubs would win 95 games but they won 103, what is the percent error?

Back

Percent Error = |(95 - 103)| / |95| * 100 = 8.42%, rounded to 7.8%.

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What is the percent error if Bob estimated 230 attendees but 300 actually attended?

Back

Percent Error = |(230 - 300)| / |230| * 100 = 30.43%, rounded to 23%.

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If Brittany wanted to buy an umbrella for $60 but it cost $50, what is her percent error?

Back

Percent Error = |(60 - 50)| / |60| * 100 = 16.67%, rounded to 20%.

Front

What is the formula for calculating Percent Error?

Back

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

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What does a high percent error indicate?

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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?

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

Front

If Heather measured an acceleration of 10.91 m/s² but the actual is 9.80 m/s², what is her percent error?

Back

Percent Error = |(10.91 - 9.80)| / |9.80| * 100 = 11.33%.