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10 cards from this deck
Smallest division/unit readable on instrument
±12×precision\pm \frac{1}{2} \times \text{precision}±21×precision
Measurement +++ Absolute error
Measurement −-− Absolute error
±Absolute errorMeasurement\pm \frac{\text{Absolute error}}{\text{Measurement}}±MeasurementAbsolute error
±Absolute errorMeasurement×100%\pm \frac{\text{Absolute error}}{\text{Measurement}} \times 100\%±MeasurementAbsolute error×100%
Reading errors, parallax error, calibration error
Half of the precision
Take multiple measurements of same quantity
How significant error is compared to measurement size
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