A very basic place to find the percent error formula, with a very brief description of its use.
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Beverly Hills Unified School District
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An easy to understand list of the significant digit rules, with examples
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science help online
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BIO205 - Ch 2 - Chemical Principles - RioSalado - AZ
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StudyStack
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This website is great because it generates numbers for students to guess how many sig figs each number has.
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Significant Figures
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Chapter 6 - Standard Esthetics
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StudyStack
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Interactive quiz format allows students to practice determining significant figures in several measurements.
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Significant Figures Practice
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Contains a detailed destcription of the Q-test, used to determine when a data point can be ignored as an anomolous outlier
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University of Athens
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