How is accuracy different from precision

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One blood glucose meter always reads 10 too high. Another meter reads anywhere from 5 to 9 too high. Which one is the more precise? which one is the more accurate? How is accuracy different from precision?

Reference no: EM13108698

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How is accuracy different from precision : One blood glucose meter always reads 10 too high. Another meter reads anywhere from 5 to 9 too high. Which one is the more precise? which one is the more accurate? How is accuracy different from precision?
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