Accuracy

A set of data are all close to each other, and they are close to the actual value.  This set of data can be described as...

• accurate

• precise

• both precise and accurate

Volume?

• 63.5 mL

• 63 mL

• 63.55 mL

• 6 mL

Measurements: 24.9, 25.2, 25.1, 24.8

True Value: 25.0

These measurements are…

• Accurate, but not precise

• Precise, but not accurate

• Both precise and accurate

• Neither precise nor accurate

Does this image show results that are accurate and/or precise?

• Accurate, but not precise

• Precise, but not accurate

• Both precise and accurate

• Neither precise nor accurate

Tags

NGSS.MS-PS1-2

NGSS.MS-PS3-1

In a lab, it is best to be...

• accurate

• precise

• accurate and precise

• neither accurate nor precise

Record the following in cm

• 1.0

• 1.2

• 1.25

• 1.250

• 1.30

A carpentry teacher measured a board at 15.2cm. Three students measured the same board. Which student was the most accurate?

• Alex

• Chandra

• Luis

Which of the following best describes a measurement that is close to the true value but not necessarily close to other measurements?

• Accurate

• Precise

• Both accurate and precise

• Neither accurate nor precise

A scientist measures the boiling point of water three times and gets 100.1°C, 100.2°C, and 100.0°C. The true boiling point is 100.0°C. How would you describe these measurements?

• Accurate but not precise

• Precise but not accurate

• Both accurate and precise

• Neither accurate nor precise

In an experiment, a student consistently measures the length of a table as 2.0 meters, while the actual length is 2.5 meters. These measurements are...

• Accurate but not precise

• Precise but not accurate

• Both accurate and precise

• Neither accurate nor precise