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4 Cards in this Set
- Front
- Back
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What are two kinds of errors and how are they expressed? |
Absolute errors (expressed as plus/minus some value X) and relative errors (expressed as plus/minus some percentage) |
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How do you propagate errors when adding or subtracting? |
When adding or subtracting, add the absolute errors. |
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How do you propagate errors when multiplying or dividing? |
When multiplying or dividing, propagate errors by adding the relative errors. |
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What are two kinds of physical variables and their definitions? |
Substantial errors: Requre a standard against which measurements are made (these standards are called units) Natural Variables: Do not require any units or standards of measurement (dimensionless variables: a ratio of quantities that do have units in such a way that they cancel out) |
