Re: [R] building a regression model

2013-01-05 Thread Mario Bourgoin
You have to understand the ``scope'' argument to add1. As Rui Barradas points out, that argument expects a formula, but you pass it a data frame, YET you only get two warnings. You should practice having that feel strange to you, and having it make you investigate: 1- Why did you not have to giv

Re: [R] building a regression model

2013-01-05 Thread Bert Gunter
Homework? There is a no homework policy on this list. -- Bert On Sat, Jan 5, 2013 at 3:06 AM, Katarzyna Nurzynska wrote: > Hi > > I am trying to build a regression model. My data looks like this: > > A B C DE > 1 1 12.575 > 2 0 0 1.64

Re: [R] building a regression model

2013-01-05 Thread Rui Barradas
Hello, The "error" is just a warning, these are not the same thing. And the warning says that you're giving a wrong scope argument, one that includes the response. See ?add1. Argument 'scope' is "a formula giving the terms to be considered for adding or dropping." And you're passing the entir

[R] building a regression model

2013-01-05 Thread Katarzyna Nurzynska
Hi I am trying to build a regression model. My data looks like this: A B C         D                    E 1 1 1        2.57            5 2 0 0       1.64            3 0 5 1      4.8                    1 1 3 0      3.56                   168 1 1 1      2.13                   1 0 3 1      5

[R] building a regression model

2013-01-05 Thread dada
Hi I am trying to build a regression model. My data looks like this: A B C D E 1 1 1 2.575 2 0 0 1.643 0 5 1 4.8 1 1 3 0 3.56168 1 1 1 2.131 0