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Published byColeen Pearson Modified over 5 years ago

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Data analysis (chapter 2) SI units and the metric system ▫Base units Time (sec) Length (m) Mass (kg) Temperature (Kelvin) Derived base units Volume (m 3 ) Density (g/cm 3 )

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Prefixes

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Scientific notation Review how to add, subtract, multiply, and divide

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Dimensional analysis

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Accuracy (the nearness to the correct answer) and Precision (how close a series of measurements are to each other)

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Percent error |Accepted – Measured| x 100 Accepted

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Significant figures 1. Non-zero digits are always significant. 2. Any zeros between two significant digits are significant. 3. A final zero or trailing zeros in the decimal portion ONLY are significant.

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Rules for rounding, adding, subtracting, multiplying, and dividing

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Graphing Circle graph – data is based on 100% Bar graph – used to compared unique sets of data Line graph – most common

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