Re: [R] Regression model fitting

2018-05-04 Thread Bert Gunter
These is essentially a statistical question, which are generally consider off topic here. So you may not get a satisfactory reply. stats.stackexchange.com is probably a better venue for your post. Cheers, Bert Bert Gunter "The trouble with having an open mind is that people keep coming along

Re: [R] Regression model fitting

2018-05-04 Thread Eivind K. Dovik
On Fri, 4 May 2018, Allaisone 1 wrote: Hi all , I have a dataframe (Hypertension) with following headers :- Hypertension ID Hypertension(before drug A) Hypertension(On drug A)On drug B? Healthy diet? 1160

[R] Regression model

2013-11-21 Thread srecko joksimovic
Hi, I'm trying to fit regression model, but there is something wrong with it. The dataset contains 85 observations for 85 students.Those observations are counts of several actions, and dependent variable is final score. More precisely, I have 5 IV and one DV. I'm trying to build regression model

Re: [R] Regression model

2013-11-21 Thread Rolf Turner
(1) Is this homework? (This list doesn't do homework for people!) (Animals maybe, but not people! :-) ) (2) Your question isn't really an R question but rather a statistics/linear modelling question. It is possible that you might get some insight from Frank Harrel's book Regression

Re: [R] Regression model

2013-11-21 Thread srecko joksimovic
No, it's not homework, it's just some initial analysis, but still... and thanks for recommendation. On Thu, Nov 21, 2013 at 4:42 PM, Rolf Turner r.tur...@auckland.ac.nzwrote: (1) Is this homework? (This list doesn't do homework for people!) (Animals maybe, but not people! :-) ) (2) Your

Re: [R] Regression model for predicting ranks of the dependent variable

2013-09-16 Thread Greg Snow
What question (or questions) are you trying to answer? Any advice we may give will depend on what you are trying to accomplish. On Sat, Sep 14, 2013 at 2:12 PM, Saumya Gupta saumya.gu...@outlook.comwrote: I have a dataset which has several predictor variables and a dependent variable, score

Re: [R] Regression model for predicting ranks of the dependent variable

2013-09-16 Thread David Winsemius
is not the objective. The objective is just to predict their ranks. But, finding the exact formula for calculating scores will be a bonus. Date: Mon, 16 Sep 2013 10:20:08 -0600 Subject: Re: [R] Regression model for predicting ranks of the dependent variable From: 538...@gmail.com To: saumya.gu

Re: [R] Regression model for predicting ranks of the dependent variable

2013-09-16 Thread Greg Snow
is not necessary and even finding out the formula is not the objective. The objective is just to predict their ranks. But, finding the exact formula for calculating scores will be a bonus. -- Date: Mon, 16 Sep 2013 10:20:08 -0600 Subject: Re: [R] Regression model

Re: [R] Regression model for predicting ranks of the dependent variable

2013-09-16 Thread Saumya Gupta
] Regression model for predicting ranks of the dependent variable From: 538...@gmail.com To: saumya.gu...@outlook.com CC: r-help@r-project.org What question (or questions) are you trying to answer? Any advice we may give will depend on what you are trying to accomplish. On Sat, Sep 14, 2013 at 2

Re: [R] Regression model for predicting ranks of the dependent variable

2013-09-15 Thread Frank Harrell
require(rms) ?orm# ordinal regression model For a case study see Handouts in http://biostat.mc.vanderbilt.edu/CourseBios330 Since you have lost the original values, one part of the case study will not apply: the use of Mean(). Frank - I have a dataset which has

[R] Regression model for predicting ranks of the dependent variable

2013-09-14 Thread Saumya Gupta
I have a dataset which has several predictor variables and a dependent variable, score (which is numeric). The score for each row is calculated using a formula which uses some of the predictor variables. But, the score figures are not explicitly given in the dataset. The scores are only

[R] Regression model when dependent variable can only take positive values

2011-12-06 Thread Michael Haenlein
Dear all, I would like to run a regression of the form lm(y ~ x1+x2) where the dependent variable y can only take positive values. Assume, for example, that y is the height of a person (measured in cm), x1 is the gender (measured as a binary indicator with 0=male and 1=female) and x2 is the age

Re: [R] Regression model when dependent variable can only take positive values

2011-12-06 Thread ONKELINX, Thierry
a given body of data. ~ John Tukey -Oorspronkelijk bericht- Van: r-help-boun...@r-project.org [mailto:r-help-boun...@r-project.org] Namens Michael Haenlein Verzonden: dinsdag 6 december 2011 14:09 Aan: r-help@r-project.org Onderwerp: [R] Regression model when dependent variable can only take

Re: [R] Regression model with proportional dependent variable

2011-04-12 Thread Achim Zeileis
On Mon, 11 Apr 2011, ty ty wrote: Hello, dear experts. I don't have much experience in building regression models, so sorry if this is too simple and not very interesting question. Currently I'm working on the model that have to predict proportion of the debt returned by the debtor in some

Re: [R] Regression model with proportional dependent variable

2011-04-12 Thread peter dalgaard
On Apr 12, 2011, at 08:45 , Achim Zeileis wrote: On Mon, 11 Apr 2011, ty ty wrote: Hello, dear experts. I don't have much experience in building regression models, so sorry if this is too simple and not very interesting question. Currently I'm working on the model that have to predict

Re: [R] Regression model with proportional dependent variable

2011-04-12 Thread Achim Zeileis
On Tue, 12 Apr 2011, peter dalgaard wrote: On Apr 12, 2011, at 08:45 , Achim Zeileis wrote: On Mon, 11 Apr 2011, ty ty wrote: Hello, dear experts. I don't have much experience in building regression models, so sorry if this is too simple and not very interesting question. Currently I'm

[R] Regression model with proportional dependent variable

2011-04-11 Thread ty ty
Hello, dear experts. I don't have much experience in building regression models, so sorry if this is too simple and not very interesting question. Currently I'm working on the model that have to predict proportion of the debt returned by the debtor in some period of time. So the dependent variable

Re: [R] regression model selection (John P. Burkett)

2009-01-18 Thread Monte Milanuk
John, Thanks for the tip on that document; after some searching I found a PDF copy of it on the 'Net. It may take me a little while to work through it, but it looks to be full of good info and worth the effort. I'll also take a look at leaps as I get time. Thanks, Monte [[alternative

[R] regression model selection

2009-01-17 Thread Monte Milanuk
Hello, Newbie here, be gentle ;) I have a reference book that discusses regression model selection using several methods - what they call 'Forward Model Selection' i.e. add one variable at a time and examining R, R^2, Mallow's C-p value, etc., 'Backward Model Selection' i.e. starting out with

Re: [R] regression model selection

2009-01-17 Thread John P. Burkett
Monte Milanuk wrote: I have a reference book that discusses regression model selection using several methods - what they call 'Forward Model Selection' i.e. add one variable at a time and examining R, R^2, Mallow's C-p value, etc., Backward Model Selection' i.e. starting out with all the

[R] Regression Model with Memory

2008-06-02 Thread Stefan Koenig
Dear all: I am searching for a regression model (e.g. y=Xb+e) in which dummy-coded events (to time point t) on different regressors in X exhibit an effect on subsequent responses in the vector y (to time-points t+1, t+2,… t+n). My aim is to estimate how long the memory effect is and how strong

[R] Regression Model with a Memory Covariate Process

2008-05-31 Thread Stefan Koenig
Dear all: I am searching for a regression model (e.g. y=Xb+e) in which dummy-coded events (to time point t) on different regressors in X exhibit an effect on subsequent responses in the vector y (to time-points t+1, t+2,… t+n). My aim is to estimate how long the memory effect is and how strong