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10 Cards in this Set
- Front
- Back
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Directly proportionate |
This is the relationship between two variables when increasing or decreasing with a constant ratio. |
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Inversely proportionate |
This is the relationship between two variables when as one variable increases the other variables decreases by the same rate. |
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Accuracy |
How close a measurement is to the true value |
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precision |
number of significant figures - how ell you use the apparatus |
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systematic uncertainty |
will result in the values being too bug or too small and cant be eliminated through repeats - non-zero, reaction time, incorrectly callibrated scale. |
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Random uncertainty |
scatter of readings around the true value - can be eliminated through repeats - reading measurements that change with time, parallax error. |
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absolute error |
the uncertainty in a measurement due to the measurer or apparatus (usually the smallest unit of measurement) |
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relative error (percentage error) |
absolute error divided by the measurement. often expresses as a percentage error. |
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vector |
a vector quantity is a quantity that has both magnitude and direction |
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scalar |
a scalar quantity is a quantity that only has magnitude and no direction |
