Accuracy & Precision

Front

What is accuracy?

Back

Accuracy refers to how close a measured value is to the actual (true) value.

Front

What is precision?

Back

Precision refers to how close the measured values are to each other, regardless of whether they are close to the actual value.

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 does it mean if data is precise but not accurate?

Back

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

Front

What does it mean if data is accurate but not precise?

Back

It means the data points are close to the true value but not close to each other.

Front

What does it mean if data is neither precise nor accurate?

Back

It means the data points are neither close to each other nor close to the true value.

Front

In a bullseye diagram, what does a cluster of darts far from the center but close to each other represent?

Back

Low accuracy and high precision.

Front

In a bullseye diagram, what does a cluster of darts near the center but spread out represent?

Back

High accuracy and low precision.

Front

If measurements are 2.5, 14.5, 10.1, 45.3 and the true value is 25.0, how would you describe these measurements?

Back

Neither precise nor accurate.

Front

If the volume of a shape is measured as 36.5, what does this indicate about the measurement?

Back

It indicates a specific value that may be accurate depending on the true volume.