Precision
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Definition
The degree of refinement in a measurement, indicated by the number of significant digits.
Explanation
A measurement of 2.54 cm has three significant figures. Higher precision means more decimal places, but doesn't necessarily mean higher accuracy.
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RELATED TERMS
Conversion Factor
A numerical multiplier used to convert a quantity from one unit to another.
Accuracy
How close a measurement is to the true value of the quantity being measured.
Dimensional Analysis
A method of converting units by multiplying by conversion factors that equal 1.
Nautical Mile
A unit of distance used in sea and air navigation, equal to 1,852 meters.
Significant Figures
The meaningful digits in a number that contribute to its measurement precision.