Percent Error

Front

What is Percent Error?

Back

Percent Error is a measure of how inaccurate a measurement is, compared to the true value. It is calculated using the formula: Percent Error = |(Estimated Value - Actual Value)| / |Actual Value| x 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 that difference, divide by the actual value, and then multiply by 100 to get a percentage.

Front

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

Back

12.5%

Front

What is the percent error if a student measures 12 cm but the actual length is 14.25 cm?

Back

15.79%

Front

Zed estimated there were 350 chips in a bag but found only 210. What is his percent error?

Back

67%

Front

If the estimated deer population is 17,600 but the actual count is 21,300, what is the percent error?

Back

17.4%

Front

What is the percent error for an estimated attendance of 15,000 when only 12,500 attended?

Back

20%

Front

What does a high percent error indicate?

Back

A high percent error indicates a significant difference between the estimated value and the actual value, suggesting a poor estimation.

Front

What does a low percent error indicate?

Back

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

Front

What is the formula for calculating Percent Error?

Back

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