Understanding Accuracy and Precision

What does accuracy in measurements refer to?

• Closeness to the true value

• Randomness of results

• Consistency of results

• Difference from the true value

If a scale shows readings of 18.95 kg, 21.22 kg, and 19.81 kg for a 20 kg dumbbell, how would you describe the scale?

• Precise but not accurate

• Accurate but not precise

• Neither precise nor accurate

• Both accurate and precise

What does precision in measurements imply?

• Consistency of results

• Randomness of results

• Variability in results

• Closeness to the true value

If repeated measurements on a scale read 23.11 kg, 23.09 kg, and 23.12 kg for a 20 kg object, the scale is:

• Both precise and accurate

• Accurate but not precise

• Precise but not accurate

• Neither precise nor accurate

What does it mean if results are described as 'consistently inconsistent'?

• They are both precise and accurate

• They are neither precise nor accurate

• They are accurate

• They are precise

How would you describe a scenario where all shots hit the same area of a target but not near the center?

• Accurate but not precise

• Accurate and precise

• Neither accurate nor precise

• Precise but not accurate

Which scenario describes a measurement that is accurate but not precise?

• Results are inconsistent and far from the true value

• Results are consistent and close to the true value

• Results are consistent but far from the true value

• Results are close to the true value but inconsistent

Which example illustrates a scenario where measurements are both accurate and precise?

• Measurements are close together but far from the true value

• Measurements are scattered but close to the true value

• Measurements are scattered and far from the true value

• Measurements are close together and close to the true value

What is the best description for measurements that are equidistant from the center and consistent?

• Precise but not accurate

• Accurate and not precise

• Not accurate and not precise

• Accurate and precise

What is indicated by a measurement scenario where results are around the true value but vary widely?

• High precision

• High accuracy

• Low precision

• Both high precision and accuracy