Percent Error

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What is Percent Error?

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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%.

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How do you calculate Percent Error?

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

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If you estimate 135 texts but the actual number is 108, what is the Percent Error?

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Percent Error = |(135 - 108)| / |108| * 100% = 25%.

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Jessie estimates her cat's weight as 8 pounds, but it is actually 10 pounds. What is the Percent Error?

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Percent Error = |(8 - 10)| / |10| * 100% = 20%.

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What is the Percent Error if the estimated deer population is 17,600 and the actual count is 21,300?

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Percent Error = |(17,600 - 21,300)| / |21,300| * 100% = 17.4%.

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During a science experiment, students measured a length of 12 cm, but the actual length is 14.25 cm. What is the Percent Error?

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Percent Error = |(12 - 14.25)| / |14.25| * 100% = 15.79%.

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Bob estimates 230 concert attendees, but the actual number is 300. What is the Percent Error?

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Percent Error = |(230 - 300)| / |300| * 100% = 23%.

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What does a negative Percent Error indicate?

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A negative Percent Error indicates that the estimated value is less than the actual value.

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What does a positive Percent Error indicate?

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A positive Percent Error indicates that the estimated value is greater than the actual value.

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Why is Percent Error important in real-life applications?

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Percent Error helps to assess the accuracy of estimates and measurements, which is crucial in fields like science, engineering, and finance.