Uncertainty and Measurement

What is the temperature and uncertainty indicated by this thermometer?

• 24.1 ± 0.5 °C

• 24.05 ± 0.05 °C

• 24 ± 1 °C

• 28.0 ± 0.1°C

Repeated measurements of a quantity can reduce the effects of

• both random errors and systematic errors

• neither random errors nor random errors

• random errors

• systematic errors

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

A measure of consistency or repeatability of measurement.

• Precision

• Resolution

• Sensitivity

• Error

What is the voltage and uncertainty indicated by this voltmeter on the 0 - 15 V scale?

• 3.8 ± 0.3 V

• 3.5 ± 0.5 V

• 4.0 ± 0.1 V

• 1.3 ± 0.1 V

Random errors lead to a lack of:

• accuracy in the measurement.

• significant digits in the measurement.

• precision in the measurement.

• gradation of the measuring instrument

What is 67,490 rounded to 2 significant figures?

• 67 500
• 60 000
• 68,000
• 67, 000

Tags

CCSS.3.NBT.A.1

CCSS.4.NBT.A.3

How many significant figures are in the measurement 0.0570 min?

• 2

• 3

• 4

• 5

How would you write 564,000,000 in scientific notation?

• 5.64 x 10^-7
• 5.64 x 10⁶
• 5.64 x 10⁸
• 56.4 x 10⁷