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Published byAngel Dennis Modified over 9 years ago

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Physics Rules for using Significant Figures

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Rules for Averaging Trials Determine the average of the trials using a calculator Determine the uncertainty of the trials Round the calculated average to the correct precision based on the uncertainty of the trials

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Rules for determining # of significant digits (figures) All non-zero numbers are considered significant All zeros between non-zero numbers are considered significant All zeros found to the right of a non-zero number and the decimal point are considered significant All zeros found left of the first non-zero number are NOT significant (regardless of the decimal point placement)

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Rules for Adding / Subtracting The final answer can not have more decimal places than the measurement with the least number of decimal places.

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Rules for Multiplying / Dividing The final answer can not have more significant digits than the measurement with the least number of significant digits.

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