[R] help with R

John Sorkin jsorkin at grecc.umaryland.edu
Thu Jan 10 00:49:11 CET 2008

What operating system are you using? Have you loaded R onto you computer? If not I suggest you do so. You can than enter the command
which will give you information about lm command, the command used to perform linear regresssion. I would also suggest that you go to
and do some reading of the introduction document. Once you have done this you should be able to get started using R and will be able to ask a question that we can more easily answer.

John Sorkin M.D., Ph.D.
Chief, Biostatistics and Informatics
Baltimore VA Medical Center GRECC,
University of Maryland School of Medicine Claude D. Pepper OAIC,
University of Maryland Clinical Nutrition Research Unit, and
Baltimore VA Center Stroke of Excellence

University of Maryland School of Medicine
Division of Gerontology
Baltimore VA Medical Center
10 North Greene Street
Baltimore, MD 21201-1524

(Phone) 410-605-7119
(Fax) 410-605-7913 (Please call phone number above prior to faxing)
jsorkin at grecc.umaryland.edu
>>> <Sitadri_Bagchi at swissre.com> 01/09/08 4:35 PM >>>
 Folks, Two simple questions :

(1) I have a data set (call it data.xls) in a folder in my hard drive. How 
do I perform a simple regression between two variables from that data set? 
 After I click on 'R', what exactly do I type in?

(2) Where do I get to see the complete library of packages offered by R? 
In particular, I am interested in quantile regression and logistic 



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