search for: vassar

...: Friedman rank sum test data: RoundingTimes? Friedman chi-squared = 11.1429, df = 2, p-value = 0.003805 Same data, in Excel, using the WinSTAT for Excel (Fitch software), gives: Friedman chi-squared = 10.6364, df = 2, p-value =0.004902 Puzzled, I entered the data in the calculator from Vassar (http://faculty.vassar.edu/lowry/fried3.html ) and got exactly the same values as in Excel (and, again, different from R). Admittedly, the differences are not large, and both fall below the 0.05 threshold, but, still. So, question 1 would be "why is R different from both Excel and Vassar?&quo...

...e. unlike for correlation coefficients I know that the difference for z values is mathematically defined but I do not know how to incorporate the sample size. I found a couple of websites that provide that service but since I have huge data sets I need to automate this procedure. (http://faculty.vassar.edu/lowry/rdiff.html) Can anyone help? Cheers, syrvn -- View this message in context: http://r.789695.n4.nabble.com/Significance-of-the-difference-between-two-correlation-coefficients-tp3063765p3063765.html Sent from the R help mailing list archive at Nabble.com.

Hello R gurus, I am a beginner with R. I am doing an ANCOVA analysis using 'aov,' and need some help understanding how 'aov' works. I have a dataset (taken from http://faculty.vassar.edu/lowry/ch17pt2.html) looking at hypnotic induction. The variable 'X' is a measure of how susceptible the subject is to being hypnotized, the variable 'Y' is how well the subject was hypnotized in the experiment, and the variable 'Method' is the method of hypnosis used in...

Hi, i have a question in R, How and what command you need to do to run a kruskal-wallis test without the built in command 'kruskal.test'? many thanks. _________________________________________________________________ [[alternative HTML version deleted]]

...ooses one or the other to report. (The biggest or the smallest). Why is only one being reported? Also I have two implementations of the algorithm. One at http://en.wikipedia.org/wiki/Mann-Whitney_U_test calculates U then generates a normal random variable as (U-Mu)/S and one from http://faculty.vassar.edu/lowry/webtext.html that does not use U instead uses the ranks directly. The second algorithm agrees with the output of wilcox.test in R. Why calculate U, or W, at all? cheers Worik [[alternative HTML version deleted]]

...= yes Sorry, for the long message, but I figure I better give as much information as I can. Thanks in Advance. - Deepak +=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+= + Deepak Vaidya dvaid@ctp.com + email: dvaid@ctp.com + + CTP, Inc. (617) 374 8413 + phone: (617) 374 8413 + + 304 Vassar St. Camb. MA 02139 + +

...st without any conflicts.) Anybody have any ideas? Could it be a typo in the make script? regards, fred ----------------------------------------------------------- Frederic Chagnon Massachusetts Institute of Technology Bldg 48, Room 212 Ralph M. Parsons Laboratory Doctoral Candidate 15 Vassar Street, Cambridge, MA, 02139 ph. +1.617.253.5483 frederic at mit.edu ----------------------------------------------------------- -.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.- r-help mailing list -- Read http://www.ci.tuwien.ac.at/~hornik/R/R-FAQ.html Send "...

Dear All, I have a problem understanding the difference between the outcome of a fisher exact test and a chi-square test (with simulated p.value). For some sample data (see below), fisher reports p=.02337. The normal chi-square test complains about "approximation may be incorrect", because there is a column with cells with very small values. I therefore tried the chi-square with

...,394,526,851,645,528,701,371,301,205,10= ,891 2883,Syracuse Univ.-Utica College,NY,IIB,487,394,339,401,642,520,439,527,27,= 46,32,0,105 2889,Union College,NY,IIA,638,508,399,512,841,677,501,667,60,50,54,9,173 2894,University of Rochester,NY,I,747,520,434,611,895,626,520,733,252,130,11= 0,7,508 2895,Vassar College,NY,IIB,674,517,408,523,879,669,512,674,70,60,66,9,212 2899,Wagner College,NY,IIB,457,366,326,368,587,477,438,483,20,17,31,4,72 2901,Wells College,NY,IIB,464,373,318,396,568,454,389,484,21,10,14,0,46 4779,Long Island University,NY,IIA,631,513,408,531,825,672,520,690,233,175,1= 24,22,561 4804...