1.2 Accuracy and Precision

Front

What is Precision?

Back

Precision is a measure of how close measurements come to each other when they are made in the same way.

Front

What does Accuracy mean?

Back

Accuracy means the measurement is close to the true value.

Front

What does a bullseye with all darts clustered tightly in the center represent?

Back

High Accuracy & High Precision.

Front

What does a bullseye with darts spread out but centered around the target represent?

Back

High Accuracy & Low Precision.

Front

What does a bullseye with darts clustered tightly but far from the center represent?

Back

Low Accuracy & High Precision.

Front

What does a bullseye with darts scattered and far from the center represent?

Back

Low Accuracy & Low Precision.

Front

How close a measurement is to the accepted value is called ___________.

Back

Accuracy.

Front

What is the difference between accuracy and precision?

Back

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

Front

If a measurement is very 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 a measurement is very precise but not accurate, what does that mean?

Back

It means the measurements are consistent with each other but far from the true value.