Accuracy and Precision Quiz

What does "accuracy" refer to in measurement?

• Consistency of results

• Closeness to the true value

• Number of decimal places

• Measurement using tools

What does "precision" refer to in measurement?

• How fast a result is obtained

• The closeness to the correct answer

• Closeness between repeated measurements

• Type of measuring instrument

A student measures the length of a table four times and gets 101 cm, 102 cm, 101 cm, and 102 cm. What do these results show?

• High accuracy only

• Low precision

• High precision

• High accuracy and precision

Which tool is typically more precise?

• Ruler

• Measuring tape

• Vernier caliper

• Plastic protractor

Which of the following shows both high accuracy and high precision?

• Measurements close to each other but far from the true value

• Measurements far from each other but average is correct

• Measurements scattered randomly

• Measurements close to each other and to the true value

A basketball player makes several shots that all hit the same spot on the backboard, but not the basket. This is an example of:

• Accuracy only

• Precision only

• Both

• Neither

Which set of measurements is most accurate if the true value is 25.0 cm?

• 24.9 cm, 25.0 cm, 25.1 cm

• 23.2 cm, 23.1 cm, 23.3 cm

• 26.0 cm, 26.1 cm, 26.2 cm

• 25.8 cm, 25.9 cm, 25.8 cm

If an archer hits the bullseye several times, they are demonstrating:

• Low precision

• Low accuracy

• High accuracy and precision

• High accuracy only

In scientific experiments, why is precision important?

• It ensures fast results

• It increases cost

• It allows reproducibility

• It decreases variability

Which situation shows low accuracy and low precision?

• Hitting the same wrong spot repeatedly

• Hitting the bullseye every time

• Hitting different spots far from the target

• Hitting near the center in a group