翻訳と辞書 Words near each other ・ Diyarbakır Prison ・ Diyarbakır Province ・ Diyarbakır Stadium ・ Diyarbakırspor ・ Diyarbekir Eyalet ・ Diyarbekir Vilayet ・ Diyari ・ Diyari language ・ Diyatalawa ・ Dixon Ward ・ Dixon Waterfowl Refuge ・ Dixon's Chimney and Shaddon Mill ・ Dixon's factorization method ・ Dixon's Ferry ・ Dixon's identity ・ Dixon's Q test ・ Dixon's Return ・ Dixon, California ・ Dixon, Illinois ・ Dixon, Indiana ・ Dixon, Iowa ・ Dixon, Kentucky ・ Dixon, Missouri ・ Dixon, Montana ・ Dixon, Nebraska ・ Dixon, New Mexico ・ Dixon, New Orleans ・ Dixon, Wyoming ・ Dixon-Globe Opera House-Robinson-Schwenn Building ・ Dixon-Leftwich-Murphy House Dictionary Lists mini英和辞書 mini和英辞書 Webster 1913 Latin-English FOLDOC Wikipedia English ウィキペディア

翻訳と辞書　辞書検索 [ 開発暫定版 ] スポンサード リンク Dixon's Q test ： ウィキペディア英語版 Dixon's Q test In statistics, Dixon's ''Q'' test, or simply the ''Q'' test, is used for identification and rejection of outliers. This assumes normal distribution and per Dean and Dixon, and others, this test should be used sparingly and never more than once in a data set. To apply a ''Q'' test for bad data, arrange the data in order of increasing values and calculate ''Q'' as defined: : $Q\; =\; \backslash frac\}$ Where ''gap'' is the absolute difference between the outlier in question and the closest number to it. If ''Q'' > ''Q''table, where ''Q''table is a reference value corresponding to the sample size and confidence level, then reject the questionable point. Note that only one point may be rejected from a data set using a Q test. ==Example== Consider the data set: :$0.189,\backslash \; 0.167,\backslash \; 0.187,\backslash \; 0.183,\backslash \; 0.186,\backslash \; 0.182,\backslash \; 0.181,\backslash \; 0.184,\backslash \; 0.181,\backslash \; 0.177\; \backslash ,$ Now rearrange in increasing order: :$0.167,\backslash \; 0.177,\backslash \; 0.181,\backslash \; 0.181,\backslash \; 0.182,\backslash \; 0.183,\backslash \; 0.184,\backslash \; 0.186,\backslash \; 0.187,\backslash \; 0.189\; \backslash ,$ We hypothesize that 0.167 is an outlier. Calculate ''Q'': :$Q=\backslash frac\}\; =\; \backslash frac=0.455.$ With 10 observations and at 90% confidence, ''Q'' = 0.455 > 0.412 = ''Q''table, so we conclude 0.167 is an outlier. However, at 95% confidence, ''Q'' = 0.455 < 0.466 = ''Q''table 0.167 is not considered an outlier. This means that for this example we can be 90% sure that 0.167 is an outlier, but we cannot be 95% sure. McBane〔Halpern, Arthur M. "Experimental physical chemistry : a laboratory textbook." 3rd ed. / Arthur M. Halpern , George C. McBane. New York : W. H. Freeman, c2006 (Library of Congress )〕 notes: Dixon provided related tests intended to search for more than one outlier, but they are much less frequently used than the r10 or Q version that is intended to eliminate a single outlier. 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Dixon's Q test」の詳細全文を読む スポンサード リンク 翻訳と辞書 : 翻訳のためのインターネットリソース Copyright(C) kotoba.ne.jp 1997-2016. All Rights Reserved.