Accuracy, Precision, and Percent Error

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

• Accuracy

• Precision

• Significant

• Estimate

When a measurement is repeatable and consistent it is said to have...

• High precision
• Low precision
• High accuracy
• Low accuracy

What does this bullseye demonstrate?

• High Accuracy & High Precision

• High Accuracy & Low Precision

• Low Accuracy & High Precision

• Low Accuracy & Low Precision

What does this bullseye demonstrate?

• High Accuracy & High Precision

• High Accuracy & Low Precision

• Low Accuracy & High Precision

• Low Accuracy & Low Precision

Students measured length during a science experiment and got 12 cm. But the actual measurement was 14.25 cm. What was the percent error?

• 15.79%

• 18.75%

• 2.25%

• 18%

The deer population is estimated to be 17,600 in northern Illinois, but an actual count was 21,300. What is the percent error?

• 21%
• 17.37%
• 17.4%
• 21.02%

Tags

NGSS.HS-LS2-2

NGSS.HS-LS3-3

The attendance for the basketball game was estimated to be 15,000 people but 12,500 people attended. What was the percent error?

• 16.67%
• 20%
• 2500%
• 80%

Comparing the two numbers written in scientific notation, which number is larger 6.0 X 10 ^-3 or 6.0 X 10 ^-2

• 6.0 X 10 ^-3

• 6.0 X 10 ^-2

• both have the same value

A zero percent error in a lab is accomplished by...

• having a really good measuring device

• making sure all the steps in a procedure are being followed

• getting the exact result as the expected result in a lab

• rounding numbers to zero

Which zero's never count for significant figures?

• Leading Zero's

• Trailing Zero's

• Captive Zero's

• All the Zero's