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accuracy
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Accuracy
In mathematics, a measure of the precision of a number. The degree of accuracy depends on how many figures or decimal places are used in rounding off the number. For example, the result of a calculation or measurement (such as 13.429314) might be rounded off to three decimal places (13.429), to two decimal places (13.43), to one decimal place (13.4), or to the nearest whole number (13). The first answer is more accurate than the second, the second more accurate than the third, and so on.
Accuracy also refers to a range of errors. For example, an accuracy of ± 5% means that a value may lie between 95% and 105% of a given answer.
© RM 2009. Helicon Publishing is division of RM.
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accuracy
approximation
area
bearing (navigation)
checking procedure
circumference
construction
conversion graph
counter example
density
error
grid reference
imperial system
length
mass (physics)
metric system
perimeter
scale (mathematics)
significant figures
speed (physics)
time (science)
trial and improvement method
volume
weight
approximation
area
bearing (navigation)
checking procedure
circumference
construction
conversion graph
counter example
density
error
grid reference
imperial system
length
mass (physics)
metric system
perimeter
scale (mathematics)
significant figures
speed (physics)
time (science)
trial and improvement method
volume
weight
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