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 = |(Measured Value - Actual Value)| / Actual Value x 100%.

Front

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

Back

15.79%.

Front

What is Absolute Error?

Back

Absolute Error is the difference between the measured value and the actual value.

Front

If the actual count of students is between 1380 and 1402, what is the maximum absolute error?

Back

22.

Front

What does High Accuracy & High Precision mean?

Back

It means that the measurements are both close to the actual value and close to each other.

Front

What does it mean if data is both precise and accurate?

Back

It means the data points are close to each other and also close to the true value.

Front

What is the percent error if Zed estimated 350 chips but found only 210?

Back

67%.

Front

What is the difference between Accuracy and Precision?

Back

Accuracy refers to how close a measurement is to the actual value, while Precision refers to how close measurements are to each other.

Front

What is a common application of Percent Error in science?

Back

Percent Error is often used to assess the reliability of experimental measurements.