Accuracy vs. Precision, Significant Figures, and Scientific Notation

A set of data are all close in value to each other, but they are not close to the actual value. This set of data can be described as _________________.

• precise

• accurate

How many significant figures: 216 m

• 1

• 2

• 3

• 0

How many significant figures: 2016 m

• 1

• 2

• 3

• 4

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

Which of the following statements is true about accuracy and precision?

• Accuracy and precision are always the same.

• Accuracy and precision are unrelated to each other.

• Accuracy and precision are both important in scientific measurements.

• Accuracy is more important than precision in scientific measurements.

How many significant digits would you report in this measurement?

• 1

• 2

• 3

• 4

A calculated answer cannot be more precise than the least precise measurement from which it was calculated.

• True

• False

Precision is a measure of

• how exact the measurement is based on its significant figures.

• How close the measurement is to the true value.

• Is based on the significant figures of the true value.

?

• High Accuracy & High Precision

• High Accuracy & Low Precision

• Low Accuracy & High Precision

• Low Accuracy & Low Precision

Tags

NGSS.MS-PS2-5

NGSS.MS-PS3-1

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