Precision 41572 211925765 2008-05-12T18:43:09Z 192.235.1.34 [[WP:UNDO|Undid]] revision 211925513 by [[Special:Contributions/216.162.20.98|216.162.20.98]] ([[User talk:216.162.20.98|talk]]) {{Wiktionary}} '''Precision''' has the following meanings: #In [[engineering]], [[science]], [[industry]], and [[statistics]], ''precision'' characterises the degree of mutual agreement among a series of individual measurements, values, or results — see [[accuracy and precision]]. #In [[computing]], ''precision'' means one of the following: #*the [[precision (arithmetic)|precision]] (number of digits) with which a value is expressed (''e.g.'', the number of [[significant figures|significant decimal digits or significant bits]] – a calculation which rounds to three digits is said to have a ''working precision'' or ''rounding precision'' of 3) #*the units of the least significant digit of a measurement; for example, if a measurement is 17.130 meters then its precision is millimeters (one unit in the last place, or ''ulp'', is 1 mm) #*(in some programming languages and databases) the number of decimal places after the decimal point in a fixed-point number; to avoid confusion, this usage is best avoided. #With respect to a set of independent devices of the same design, ''precision'' is the ability of these devices to produce the same value or result, given the same [[input]] conditions and operating in the same environment (as defined by [[Federal Standard 1037C]] and [[MIL-STD-188]]). #With respect to a single device, put into operation repeatedly without adjustments, ''precision'' is the ability to produce the same value or result, given the same input conditions and operating in the same environment (as defined by [[Federal Standard 1037C]] and [[MIL-STD-188]]). #In [[information retrieval]], [[precision (information retrieval)|''precision'']] is the percentage of documents returned that are relevant. This is often coupled with the [[recall (information retrieval)|recall]] measure. Together, the two scores are sometimes used to calculate the [[F1 Score]]. #In [[music]], [[Precision (march)|''Precision'']] is the [[Authorized marches of the Canadian Forces|official march]] of the [[Royal Military College of Canada]]. #In the game of [[contract bridge]], [[Precision Club|''Precision Club'']] is a bidding system. ---- {{disambig-cleanup}} [[de:Präzision (Begriffsklärung)]] [[es:Precisión]] [[fr:Précision]] [[ko:정밀도]] [[nl:Precision]] [[ja:精度]] [[pt:Precisão]] [[zh:精度]]