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5 cards from this section. Quick, good the night before a test.
What is the definition of accuracy?
Think about how close your measurement is to what is known as correct.
How do we express absolute uncertainty?
Look at how you might report a measurement like weight or volume.
What term describes the closeness of a measured value to the true value?
Think about what makes a measurement reliable.
Are systematic errors consistent?
Remember how these errors differ from random variations.
A student measures the same liquid three times, getting 50.0 mL, 50.1 mL, and 50.2 mL. Calculate the average volume and the percentage uncertainty of the average.
First, find the average and then consider how many measurements you took.
In an experiment, you weigh a sample four times, getting results of 12.35 g, 12.40 g, 12.38 g, and 12.37 g. Determine the average mass and the absolute uncertainty of that average.
Determine the average and then see how closely the repeated results cluster.
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