E.3-E.4 Reliability of a Measurement, Significant Figures and Calculations

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Last updated 9:45 PM on 9/19/26
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5 Terms

1
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the more digits in a measurement, the ____ certainty in the measurement

more

2
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accuracy

how close measured values are to the actual value

3
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precision

how closely a series of measurements agree with one another

4
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all digits are significant EXCEPT…

leading zeros (0.3, 0.003)

5
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exact numbers

numbers with no uncertainty —> have an unlimited number of sig figs

3 categories: numbers from counting (25 kids), numbers from defined quantities (factual; 100cm=1m), integral numbers that are part of an equation (diameter=2xradius)