General, Newbie Advice, Rants, WWR Exclusive
A pet peeve of mine – using the words accuracy and precision incorrectly, and failing to make a distinction between the two.
“degree of conformity of a measure to a standard or a true value”
accuracy. (2008). In Merriam-Webster Online Dictionary.
Retrieved October 6, 2008, from http://www.merriam-webster.com/dictionary/accuracy
“the degree of refinement with which an operation is performed or a measurement stated”
precision. (2008). In Merriam-Webster Online Dictionary.
Retrieved October 6, 2008, from http://www.merriam-webster.com/dictionary/precision
In watches, accuracy is how well the watch keeps time and reflects the time according to an accepted standard. That is to say, how many seconds the watch gains or loses in a given period and how close it is to the Observatory clock. A Movado with no markings may be as accurate as an Omega with a similar movement, if they gain or lose time similarly (so many seconds a week, for example) and are set correctly.