Percent Error

Front

What is Percent Error?

Back

Percent Error is a measure of how inaccurate a measurement is, compared to the true value, expressed as a percentage.

Front

How do you calculate Percent Error?

Back

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

Front

If Griffin thinks a card costs $4.50 but it actually costs $4, what is his percent error?

Back

12.5%.

Front

Bob estimates 230 attendees at a concert, but 300 actually attended. What is his percent error?

Back

23%.

Front

You estimate sending 135 texts but actually sent 108. What is the percent error?

Back

25%.

Front

During a science experiment, students measure 12 cm, but the actual length is 14.25 cm. What is the percent error?

Back

15.79%.

Front

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

Back

17.4%.

Front

What does a percent error of 0% indicate?

Back

It indicates that the estimated value is exactly equal to the actual value.

Front

What does a high percent error signify?

Back

A high percent error indicates a significant difference between the estimated and actual values.

Front

What is the significance of understanding percent error in real-life applications?

Back

Understanding percent error helps in assessing the accuracy of estimates and improving future predictions.