DNMQ #4: Uncertainty in Measurements #1 (Fall 2024)

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

• Accuracy

• Precision

• Significant

• Estimate

This bullseye demonstrates...

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

Which Student is the most Precise?

• Alex

• Shandra

• Luis

• Student A

• Student B

• Student C

• Cannot be determined

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%

Jessie estimates the weight of her cat to be 8 pounds.  The actual weight of the cat was 10 pounds.  Find the percent error.  

• 15%
• 20%
• 25%
• 30%

Romy's measurements: 6.02 m, 6. 04 m, 6.03 m
Actual Value: 6.02 m
How would you define her measurements?

• accurate and precise
• accurate 
• precise
• neither

Students worked in teams to measure the length of an object. The actual length of the object was 7.0 cm.. Select the best choice that represents their data in terms of accuracy and precision

GROUP RESULTS

5.00 cm

5.01 cm

5.02cm

4.99 cm

5.00 cm

4.99 cm

• both accurate and precise

• only accurate

• only precise

• not accurate and not precise

Based on the markings of this beaker, what is the estimated volume?

• 48 mL

• 48.2 mL

• 48.25 mL

• 0.04 L

Based on the markings of this graduated cylinder, what is the estimated volume?

• 63.5 mL

• 63 mL

• 63.55 mL

• 0.063 L