Hallo all Suppose I have a summary amount of various colours used in different areas colour plastic paint black 15.5 173.8 brown 6.0 523.2 green 2.5 6.4 red 77.1 237.4 yellow 144.6 77.3 It seems that there are some preferable colours in these two areas (yellow in plastic, brown an red in paint). The problem seems to me similar to chi square test but it is intended for testing counts or frequencies (if I understand it well). If I wanted to know whether these differences are significant, what type of statistical test I should use, when I have no access to underlaying data? Is it possible to do any statistical test on such data? Thank you in advance Best regardsPetr Pikal petr.pikal at precheza.cz p.pik at volny.cz -.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.- r-help mailing list -- Read http://www.ci.tuwien.ac.at/~hornik/R/R-FAQ.html Send "info", "help", or "[un]subscribe" (in the "body", not the subject !) To: r-help-request at stat.math.ethz.ch _._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._
Helllo Dear R-user! I want to know how can I open and other text window where I will send the results of all the commands, so I will have a command window and a result window. In other words, how can I use something like sink() but the output goes to a new text window and not a file. Thank you for your help -- Kenneth Roy Cabrera Torres Unviersidad Nacional de Colombia, Sede Medell?n Instituto de Ciencias Naturales y Ecolog?a Escuela de Geociencias e-mail krcabrer at unalmed.edu.co Tel +57 (4) 430-9308 -.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.- r-help mailing list -- Read http://www.ci.tuwien.ac.at/~hornik/R/R-FAQ.html Send "info", "help", or "[un]subscribe" (in the "body", not the subject !) To: r-help-request at stat.math.ethz.ch _._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._
On Fri, 26 Jul 2002, Kenneth Cabrera wrote:> Helllo Dear R-user! > > I want to know how can I open and other text window where > I will send the results of all the commands, so I will have > a command window and a result window. > In other words, how can I use something like sink() but the > output goes to a new text window and not a file.sink to a connection, and pipe your connection to an external program that displays the text. Without knowing your OS it is hard to be more specific. On Unix/Linux sink to file, and run tail -f on that file in another terminal would be one way (of many). -- Brian D. Ripley, ripley at stats.ox.ac.uk Professor of Applied Statistics, http://www.stats.ox.ac.uk/~ripley/ University of Oxford, Tel: +44 1865 272861 (self) 1 South Parks Road, +44 1865 272860 (secr) Oxford OX1 3TG, UK Fax: +44 1865 272595 -.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.- r-help mailing list -- Read http://www.ci.tuwien.ac.at/~hornik/R/R-FAQ.html Send "info", "help", or "[un]subscribe" (in the "body", not the subject !) To: r-help-request at stat.math.ethz.ch _._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._
Thomas Lumley
2002-Jul-26 16:05 UTC
[R] chi square test is not appropriate? but what test is
On Fri, 26 Jul 2002, Petr Pikal wrote:> Hallo all > > Suppose I have a summary amount of various colours used in > different areas > > colour plastic paint > black 15.5 173.8 > brown 6.0 523.2 > green 2.5 6.4 > red 77.1 237.4 > yellow 144.6 77.3 > > It seems that there are some preferable colours in these two areas > (yellow in plastic, brown an red in paint). > > The problem seems to me similar to chi square test but it is > intended for testing counts or frequencies (if I understand it well). > > If I wanted to know whether these differences are significant, > what type of statistical test I should use, when I have no access to > underlaying data? > > Is it possible to do any statistical test on such data?Not without some information on the variability in the data. Even if you were prepared to make the implausible assumption that the variance is the same in each cell you couldn't estimate both this variance and the interaction between color and plastic/paint. -thomas -.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.- r-help mailing list -- Read http://www.ci.tuwien.ac.at/~hornik/R/R-FAQ.html Send "info", "help", or "[un]subscribe" (in the "body", not the subject !) To: r-help-request at stat.math.ethz.ch _._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._
Sorry, I always forget to tell the platform: I am using W2K, R v 1.51. ripley at stats.ox.ac.uk wrote:>On Fri, 26 Jul 2002, Kenneth Cabrera wrote: > >>Helllo Dear R-user! >> >>I want to know how can I open and other text window where >>I will send the results of all the commands, so I will have >>a command window and a result window. >>In other words, how can I use something like sink() but the >>output goes to a new text window and not a file. >> > >sink to a connection, and pipe your connection to an external program that >displays the text. Without knowing your OS it is hard to be more >specific. On Unix/Linux sink to file, and run tail -f on that file in >another terminal would be one way (of many). >-- Kenneth Roy Cabrera Torres Unviersidad Nacional de Colombia, Sede Medell?n Instituto de Ciencias Naturales y Ecolog?a Escuela de Geociencias e-mail krcabrer at unalmed.edu.co Tel +57 (4) 430-9308 -.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.- r-help mailing list -- Read http://www.ci.tuwien.ac.at/~hornik/R/R-FAQ.html Send "info", "help", or "[un]subscribe" (in the "body", not the subject !) To: r-help-request at stat.math.ethz.ch _._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._