similar to: multinormality

Good Night I made different test to check normality and multinormality in my dataset, but I don´t know which test is better. To verify univariate normality I checked: shapiro.test, cvm.test, ad.test, lillie.test, sf.test or jaque.bera.test and To verify multivariate normal distribution I use mardia, mvShapiro.Test, mvsf, mshapiro.test, mvnorm.e. I have a dataset with almost 1000 data and 9

Hio i tried to do this by: par(new=TRUE) but the result is one picture but y-axis has 2 diff?rent graduations.how can i correct this?( i want one graduation on y axis). -- View this message in context: http://www.nabble.com/how-can-i-superpose-2--graphs-tp17305355p17305355.html Sent from the R help mailing list archive at Nabble.com.

hi, my linear model is y=c+a*x1+b*x2 i tried to found a, c, b by the use of: mymodel<-lm(y~1+x1+x2) where y, x1, x2 are 3 vectors with the same length the result is a=NA.so i want to know where is the problem. -- View this message in context: http://www.nabble.com/lm%28%29-function-tp17546079p17546079.html Sent from the R help mailing list archive at Nabble.com.

in order to export a data.frame to sheet.xls i try: write(df,file="file_name.xls") but when i open it a message appears: "impossible to oppen this file. her format is unvalid" knowen that i work with excel_2007 what is the solution ? -- View this message in context: http://www.nabble.com/i-want-to-export-a-data.frame-to-file.xls-tp17326119p17326119.html Sent from the R

i try to use par(new=TRUE) i get them at the same graph but the y_axis and x_axis are drowen with two unevenly graduations that graph become unreadable. -- View this message in context: http://www.nabble.com/two-curves-at-one-graph-tp17307590p17307590.html Sent from the R help mailing list archive at Nabble.com.

i have a data.frame with several columns that i want to sort one of them (one column) by descending order in such way that this sorting out recover all colums. what should i do? -- View this message in context: http://www.nabble.com/how-can-i-sort-a-column-of-data.frame---tp17324725p17324725.html Sent from the R help mailing list archive at Nabble.com.

hello; firstly, my gratitude to all who help me to find a function that allows me to add confidence interval to my graph. in order to calculate the (1-alpha)th percentile of for exemple an F(df1,df2) distribution i do like this: v<-df(alpha,df1,df2) percentile<-qf(v,df1,df2,alpha) if it is true please alert me , and if it is not what should do then? :handshake: -- View this message in

Dear all, I want to save the p-value from mshapiro.test(mvnormtest). But mshapiro.test(mvnormtest) gives a list with class "htest" containing statistic, p.value, method and data.name as a whole. How do I save only p-value from the result? Thanks a lot!

Dear all, I have a multivariate dataset containing 100,000 or more points. I want find the p-value for the dataset of points coming from a particular multivariate normal distribution With mean vector u Covariance matrix s2 So H0: points ~ MVN( u, s2) H1: points not ~ MVN( u, s2) How do I find the p-value in R? To me this is a likelihood ratio test problem. In H0 the parameters are

Hello, I have a question about multivariate Shapiro-Wilks test. I tried to analyze if the data I have are multivariate normal, or how far they are from being multivariate normal. However, any time I did >mshapiro.test(mydata) I get the message: Error in solve.default(R %*% t(R), tol = 1e-18) : system is computationally singular: reciprocal condition number = 5.38814e-021 I tried

My stat textbook tells me that using Shapiro-Wilk test for each variable one by one is not equal to a test for multivariate normality as a whole. Does R have a function of testing for multivariate normality? Thanks. Hongsheng (Hank) Liao, Ph.D. Lab Manager Center for Quantitative Fisheries Ecology 800 West 46th Street Old Dominion University Norfolk, Virginia 23508 Phone:757.683.4571

hello: is there any graphic function under R that allow me to add an interval on the graphic's picture at any place i want. i mean by interval the symbol "|----|" showed verticaly and has as middle the point M with coordinates (yi,ti).please answer me as soon as possible. -- View this message in context: http://www.nabble.com/is-there-any-graphic-function-tp17240811p17240811.html

i'm trying to test the homogeneity of variance of 92 samples each one contains 3 observations. to use bartlett.test function i have created a (3,92) matrix (named xx): >bartlett.test(xx) this message appears: >Erreur dans bartlett.test.default(xx) : l'argument "g" est manquant, avec aucune valeur par d?faut when i checked the help i have understood that in g i should

Dear All,   I often have to work with certain models in which I try to "reproduce" a distribution the best I can with very little known information avaible. Is there a package or function in R that could best reproduce a probability distribution using only the mean, median and SD values availble without knowing the actual distribution type to begin with and/or the covariance matrix (for

I had a program voice chat programmed in delphi now i have a programmer making a new one in vb.net he has informed me speex does not work in vb.net applications i don't understand why not can you give some assistance Thanks Hanen -------------- next part -------------- An HTML attachment was scrubbed... URL:

Hola! Estoy teniendo un problema para testar la normalidad y la homogeneidad de varianzas para mi modelo de manova Es este mi modelo: m1<-manova(cbind(pred,fit,oniv)~tratamento/parcela+bloco,data.vegetacao) Aparte de tener tres variables respuestas (predador, fitófago, omnívoro), también es un diseño anidado. Alguien sabría responder esto? Gracias! Carol [[alternative HTML version

in order to minimize the police of the title of my graph i tried to use: >title("nombre de fleurs donn?es journellement par 6 cereus peruvianus du 1/07/02 au 31/09/02",font=0) but this message appears: Erreur dans title("nombre de fleurs donn?es journellement par 6 cereus peruvianus de 1/07/02 au 31/09/02", : valeur sp?cifi?e pour le param?tre graphique

Dear John, Dear Joseph, Thank you for your quick answers and the pointer to semnet. I try to clarify on my assumptions: - yes, I am willing to assume multivariate normality - no, I don't want to assume a single factor model - I assume there is an unknown number of factors, and I do not know which items belong to which factors but I still want to estimate single item reliabilities Is this

Sorry if this question has been asked previously, I searched but found little. There also doesn't seem to be a dedicated SEM list-serv so hopefully this will find its way to the appropriate audience. In discussing SEM with a colleague I mentioned that a model they were fitting in AMOS was equivalent to a linear regression and that the coefficients would be the same. This of course was the

Hi, I am wondering if anyone knows of an easy way to fit a saturated model using the sem package on raw data? Say the data were: mtcars[, c("mpg", "hp", "wt")] The model would estimate the three means (intercepts) of c("mpg", "hp", "wt"). The variances of c("mpg", "hp", "wt"). The covariance of mpg with