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A more accurate measure of the size of Wikipedia is the number of characters or words in articles. Wikipedia as of October 2006 had 1.4 million articles with an average length of 3,300 characters. Such a measurement gives no indication of the quality of content. It is much more difficult to estimate the number of good, useful, accurate, or ...
The study also determined that completeness of these Wikipedia articles was lowest (68%) in the category "pharmacokinetics" and highest (91.3%) in the category "indication". The authors concluded that "Wikipedia is an accurate and comprehensive source of drug-related information for undergraduate medical education". [71]
So Wikipedia:Verifiability is a major help towards the accuracy goal, but does not alone guarantee it. Re-wording with attribution is a way to convert an inaccurate or subjective statement to an accurate one. For example: "The US never landed on the moon" is inaccurate, "John Smith said that the US never landed on the moon." could be accurate.
Wikipedia can be a great tool for learning and researching information. However, as with all tertiary reference works, Wikipedia is not considered to be a reliable source as not everything in Wikipedia is accurate, comprehensive, or unbiased. Wikipedia, like other encyclopedias, is intended to provide an overview of topics and indicate sources ...
However, although Wikipedia articles are tertiary sources, Wikipedia employs no systematic mechanism for fact-checking or accuracy. Thus, Wikipedia articles (and Wikipedia mirrors) in themselves are not reliable sources for any purpose (except as sources on themselves per WP:SELFSOURCE). Primary sources are often difficult to use appropriately.
However, recent rigorous study and research have indicated that Wikipedia is as accurate and reliable as many of the peer reviewed works by top publishing companies; Wikipedia’s policies prevent excess vandalism and allow its information more neutral than many other sources; and online reputation of the editors, along with intrinsic values ...
A 2012 study covering 32 language editions analysed circadian activity of editors and concluded that the shares of contributions to English Wikipedia, from North America and Europe-Far East-Australia are almost equal, whereas this increases to 75% of European-Far Eastern-Australian contributions for the Simple English Wikipedia. The research ...
Wikipedia: Accuracy and completeness of drug information in Wikipedia medication monographs: 2016-11-17 reliability of Wikipedia Wikipedia health information on Wikipedia: Seeking health information online: does Wikipedia matter? 2009 Wikipedia health information on Wikipedia: A comparative study of academic and Wikipedia ranking: 2013 ...