accuracy and precision

Front

What is accuracy?

Back

Accuracy is a description of how close a measurement is to an accepted or true value.

Front

What is precision?

Back

Precision is a description of how similar or close measurements are to each other.

Front

What does a bull's eye represent in terms of accuracy and precision?

Back

A bull's eye shows both accuracy and precision when the measurements are close to the true value and close to each other.

Front

If measurements are accurate but not precise, what does that mean?

Back

It means the measurements are close to the true value but vary widely from each other.

Front

If measurements are precise but not accurate, what does that mean?

Back

It means the measurements are close to each other but far from the true value.

Front

What does it mean if a student group is described as accurate and precise?

Back

It means their measurements are both close to the true value and close to each other.

Front

What is an example of high accuracy and high precision?

Back

Consistently measuring the length of a table as 2.00 meters when the true length is 2.00 meters.

Front

What is an example of high precision but low accuracy?

Back

Measuring the length of a table as 1.95 meters multiple times, but the true length is actually 2.00 meters.

Front

What is an example of low precision and low accuracy?

Back

Measuring the length of a table as 1.80 meters, 2.10 meters, and 1.95 meters when the true length is 2.00 meters.

Front

What is an example of high accuracy but low precision?

Back

Measuring the length of a table as 2.00 meters, 2.05 meters, and 1.95 meters, where the average is close to the true value but individual measurements vary.