Accuracy & Precision

How close a measurement is to the true 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

Tags

CCSS.6.RP.A.3D

This bullseye demonstrates...

• High Accuracy & High Precision
• High Accuracy & Low Precision
• Low Accuracy & High Precision
• Low Accuracy & Low Precision

Tags

NGSS.HS-PS2-1

Which is the most precise measure of the length?

• 3.5 cm

• 3.12 cm

• 3 cm

• 3.625 cm

?

• High Accuracy & High Precision
• High Accuracy & Low Precision
• Low Accuracy & High Precision
• Low Accuracy & Low Precision

Tags

CCSS.5.NF.B.3

Eric is a lab technician. Every week, he needs to test the scales in the lab to make sure that they are accurate. He uses a standard mass that is exactly 8.000 grams and gets the following results. Which scale is more PRECISE?

• Scale 1

• Scale 2

• Scale 3

A manufacturing company uses three measuring tools to measure lengths. The tools are tested using a standard unit exactly 7 cm long. The results are as follows. Which tool gives the most precise measurement?

• Tool 1

• Tool 2

• Tool 3

Romy's measurements: 6.02 m, 6. 021 m, 6.01m

Actual Value: 6.02 m

How would you define her measurements?

• accurate and precise

• accurate but not precise

• precise but not accurate

• neither

Todd's measurements:

11.2 cm, 11.3 cm, 11.25 cm

Actual Value: 10.2 cm

Todd's measurements are

• accurate and precise

• accurate but not precise

• precise but not accurate

• neither

Every week, a technician in a lab needs to test the scales in the lab to make sure that they are accurate. She uses a standard mass that is exactly 4 g and gets the following results. Which scale gives the most precise measurement?

• Scale 1

• Scale 2

• Scale 3