22 lines
670 B
Plaintext
22 lines
670 B
Plaintext
= Significant Figures =
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Rules for measurement of sig figs
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1) Measurement should have all known digits plus one estimated digit, which is
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last sig fig
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2) Exact numbers have an infinite number of sig figs
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3) All non-zero numbers are significant
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4) Zeros between non-zero numbers are significant
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- 50.06 has 4 sig figs
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5) Zeros preceding non-zero numbers are never significant
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- 0.00345 has 3 sig figs
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6) Zeros at end of numbers with a decimal are always significant
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- 546.00 has 5 sig figs
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7) Zeros at end of numbers without a decimal are ambiguous
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- 54600 has 3,4,or 5 sig figs
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== Rounding ==
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* When rounding last number, use standard 5+ raise, 4- lower
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