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IB Chem 11 Data
Question | Answer |
---|---|
Random error | error that is above and below true value, usually due to limitations of equipment |
Systematic error | error that is consistently in one direction, usually due to instrument or method error |
Precision | a measure of the certainty (±) |
Accuracy | how close the value is to the accepted value |
Absolute uncertainty | the ± value in a reading |
Percentage uncertainty | the ± value in a reading divided by the reading |
Absolute error | measured value less accepted value |
Percentage error | measured value less accepted value all divided by accepted value |