search for: wasserman

Hi, I want to use Maximum likelihood to estimate the parameters from my regression line. I have purchased the book "Applied linear statistical models" from Neter, Kutner, nachtsheim & Wasserman, and in one of the first chapters, they use maximum likelihood to estimate the parameters. Now I want to tried it for my self, but couldn't find the right function. In the book, they give a fixed variance to work with, but I couldn't find a function where I can estimate the predictor and wh...

I'm wondering how to choose an appropriate linear model for a given problem. I have been reading Applied Linear Regression Models by John Neter, Michael H Kutner, William Wasserman and Christopher J. Nachtsheim. I'm still not clear how to choose an appropriate linear model. For multi-factor ANOVA, shall I start with all the interaction terms and do an F-test to see with interaction terms are not significant, then do a linear regression on a model without the non-signific...

...ms. Edelman and coworkers made a linear regression of Y on X and now I would like to ascertain the importance of the fact that X was measured with error for the utility of the formula in clinical practice (since I believe it is being misused by ignoring this fact - and more). I found in Neter, Wasserman and Kutner 3. ed a general discussion of the problem - but would very much like a more recent presentation if available and application in R. Best wishes Troels Ring Aalborg, Denmark

Hi, I would like to know how to assign values to a whole vector while keeping its attributes. For example, say I have a <- structure(1:3,x=3) and I want to change the values to 2:4. If I do, a <- 2:4, the attribute x will be lost. I have a workaround for this case, which is to use subset assignment a[1:3] <- 2:4. However, what if I want to also change the length of a? Then this workaround

hi all i would like to know if anyone has a reference on how one would place the "bands" on the pp plot. i want to test whether or not a certain data set comes from a particular distribution (not normal). i've already plotted F(X(j)) vs j/(n+1) where F(x) is the cum dist function, X(j) is the j'th order statistic and n is the sample size. a goole search gave arb references

In short: I didn't take enough stats courses in college. Now I am working on scientific research and I feel somewhat lost when it comes to designing the statistical framework. I have looked through the books at: http://www.r-project.org/doc/bib/R-books.html I even tried to read [17] Julian J. Faraway. Linear Models with R. This book is too advanced. It helped a little bit but I still

Hi all, Is there anyone who ever used igraph to calculate the index of "centralization" ? I tried my best but can't find it in igraph. The brief introduction to "centralization" can be found here , and I think it's an important index for measuring the centrality on the aggregated level.(http://faculty.ucr.edu/~hanneman/nettext/C10_Centrality.html) Thank you for any

...can easily calculate a pure error test for > lack of fit. The error term will be partitioned into pure error (error within replicates) > , and a lack of fit error and the F-test can be used to test if you have chosen an > adequate regression model. See Neter, Kutener, Nachtsheim, and Wasserman fourth edition > page 115, or Draper and Smith. Bill Venables wrote "...It makes it > impossible to write code to do it automatically, but if you know > what you are doing, the procedure is simple with the software you > have. As with so many things in statistics, it is not a ma...

Hi, We've encountered a difference in running time between a straight function call and the same call using do.call when the called function generated an error. We've isolated the problem to the following small reproducible example: Consider the following function: foo <- function(nr = 2e6, nc=3, use.do.call = FALSE) { nn <- paste("V", 1:nc, sep="") z <-

If I'm not mistaken, partial R-squared is the R^2 of the quantities plotted in a partial residual plot, so you can base the computation on that. Prof. Fox's `car' package on CRAN has a function for creating those plots, but you need to figure out the way to extract the quantities being plotted. [In any case, the basic tools for doing such computations are all in R, and it

I am still a little unclear in the difference between randomized block design and two-way factorial design after consulting a few books, including John Rice Mathematical Statistics and Data Analysis. Both put observations in cells corresponding to two factors of many levels. Both use the same computer program to analyze data. It seems that randomized block design can have only one observation

I've been trying to download from CRAN the floppy versions of the R source files: R-release-1.tar.gz, R-release-2.tar.gz I tried the servers in Seattle, Madison, and the Vienna Technical University. In each case, the file(s) were unavailable. Anne ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ Anne E. York National Marine Mammal Laboratory Seattle WA 98115-0070 USA e-mail: anne.york at noaa.gov

Hello, I'm looking for a textbook that can explain some of the math behind the intro-to-intermediate stuff like ANOVA, multiple regression, non- parametric tests, etc. A little background: I took an intro stats course last year and would like to further my education. Being as that was the highest (and only) stats class the local community college offers, it looks like I'm on

...mail.com> Nathan Rossi <nathan.rossi@xilinx.com> Nicholas Bellinger <nab@linux-iscsi.org> Nick Thomas <nick@bytemark.co.uk> Nickolai Zeldovich <nickolai@csail.mit.edu> Oleksii Shevchuk <alxchk@gmail.com> Olivier Hainque <hainque@adacore.com> Orit Wasserman <owasserm@redhat.com> Othmar Pasteka <pasteka@kabsi.at> Ozan Çağlayan <ozancag@gmail.com> Paolo Bonzini <pbonini@redhat.com Paolo Bonzini <pbonzini@redhat.com> Paul Brook <paul@codesourcery.com> Paul Burton <paul.burton@imgtec.com> Paul Durrant &...

...mail.com> Nathan Rossi <nathan.rossi@xilinx.com> Nicholas Bellinger <nab@linux-iscsi.org> Nick Thomas <nick@bytemark.co.uk> Nickolai Zeldovich <nickolai@csail.mit.edu> Oleksii Shevchuk <alxchk@gmail.com> Olivier Hainque <hainque@adacore.com> Orit Wasserman <owasserm@redhat.com> Othmar Pasteka <pasteka@kabsi.at> Ozan Çağlayan <ozancag@gmail.com> Paolo Bonzini <pbonini@redhat.com Paolo Bonzini <pbonzini@redhat.com> Paul Brook <paul@codesourcery.com> Paul Burton <paul.burton@imgtec.com> Paul Durrant &...

...mail.com> Nathan Rossi <nathan.rossi@xilinx.com> Nicholas Bellinger <nab@linux-iscsi.org> Nick Thomas <nick@bytemark.co.uk> Nickolai Zeldovich <nickolai@csail.mit.edu> Oleksii Shevchuk <alxchk@gmail.com> Olivier Hainque <hainque@adacore.com> Orit Wasserman <owasserm@redhat.com> Othmar Pasteka <pasteka@kabsi.at> Ozan Çağlayan <ozancag@gmail.com> Paolo Bonzini <pbonini@redhat.com Paolo Bonzini <pbonzini@redhat.com> Paul Brook <paul@codesourcery.com> Paul Burton <paul.burton@imgtec.com> Paul Durrant &...

...<omar.ramirez@copitl.com> Omar Ramirez Luna <omar.ramirez@ti.com> Ondrej Zary <linux@rainbow-software.org> Or Gerlitz <ogerlitz@mellanox.com> Oren Duer <oren@mellanox.co.il> Orion Poplawski <orion@cora.nwra.com> Orit Brayer <orit@ti.com> Orit Wasserman <owasserm@rehdat.com> Orjan Friberg <of@flatfrog.com> Ortwin Glück <odi@odi.ch> Oskar Schirmer <oskar@scara.com> Oskari Saarenmaa <os@ohmu.fi> Otavio Salvador <otavio@ossystems.com.br> Oto Petrik <oto.petrik@gmail.com> Otto Estuardo Solares Ca...

...<omar.ramirez@copitl.com> Omar Ramirez Luna <omar.ramirez@ti.com> Ondrej Zary <linux@rainbow-software.org> Or Gerlitz <ogerlitz@mellanox.com> Oren Duer <oren@mellanox.co.il> Orion Poplawski <orion@cora.nwra.com> Orit Brayer <orit@ti.com> Orit Wasserman <owasserm@rehdat.com> Orjan Friberg <of@flatfrog.com> Ortwin Glück <odi@odi.ch> Oskar Andero <oskar.andero@sonymobile.com> Oskar Schirmer <oskar@scara.com> Oskari Saarenmaa <os@ohmu.fi> Otavio Salvador <otavio@ossystems.com.br> Oto Petrik <...

...<omar.ramirez@copitl.com> Omar Ramirez Luna <omar.ramirez@ti.com> Ondrej Zary <linux@rainbow-software.org> Or Gerlitz <ogerlitz@mellanox.com> Oren Duer <oren@mellanox.co.il> Orion Poplawski <orion@cora.nwra.com> Orit Brayer <orit@ti.com> Orit Wasserman <owasserm@rehdat.com> Orjan Friberg <of@flatfrog.com> Ortwin Glück <odi@odi.ch> Oskar Andero <oskar.andero@sonymobile.com> Oskar Schirmer <oskar@scara.com> Oskari Saarenmaa <os@ohmu.fi> Otavio Salvador <otavio@ossystems.com.br> Oto Petrik <...

...<omar.ramirez@copitl.com> Omar Ramirez Luna <omar.ramirez@ti.com> Ondrej Zary <linux@rainbow-software.org> Or Gerlitz <ogerlitz@mellanox.com> Oren Duer <oren@mellanox.co.il> Orion Poplawski <orion@cora.nwra.com> Orit Brayer <orit@ti.com> Orit Wasserman <owasserm@rehdat.com> Orjan Friberg <of@flatfrog.com> Ortwin Glück <odi@odi.ch> Oskar Andero <oskar.andero@sonymobile.com> Oskar Schirmer <oskar@scara.com> Oskari Saarenmaa <os@ohmu.fi> Otavio Salvador <otavio@ossystems.com.br> Oto Petrik <...