Re: [R] Regression Testing

2011-01-21 Thread Achim Zeileis
On Fri, 21 Jan 2011, Mojo wrote: On 1/21/2011 9:13 AM, Achim Zeileis wrote: On Fri, 21 Jan 2011, Mojo wrote: On 1/20/2011 4:42 PM, Achim Zeileis wrote: On Thu, 20 Jan 2011, Mojo wrote: I'm new to R and some what new to the world of stats. I got frustrated with excel and found R. Enough o

Re: [R] Regression Testing

2011-01-21 Thread Mojo
On 1/21/2011 9:13 AM, Achim Zeileis wrote: On Fri, 21 Jan 2011, Mojo wrote: On 1/20/2011 4:42 PM, Achim Zeileis wrote: On Thu, 20 Jan 2011, Mojo wrote: I'm new to R and some what new to the world of stats. I got frustrated with excel and found R. Enough of that already. I'm trying to tes

Re: [R] Regression Testing

2011-01-21 Thread Achim Zeileis
On Fri, 21 Jan 2011, Mojo wrote: On 1/20/2011 4:42 PM, Achim Zeileis wrote: On Thu, 20 Jan 2011, Mojo wrote: I'm new to R and some what new to the world of stats. I got frustrated with excel and found R. Enough of that already. I'm trying to test and correct for Heteroskedasticity I have

Re: [R] Regression Testing

2011-01-21 Thread Mojo
On 1/20/2011 4:42 PM, Achim Zeileis wrote: On Thu, 20 Jan 2011, Mojo wrote: I'm new to R and some what new to the world of stats. I got frustrated with excel and found R. Enough of that already. I'm trying to test and correct for Heteroskedasticity I have data in a csv file that I load and

Re: [R] Regression Testing

2011-01-20 Thread Andrew Miles
Perhaps the easiest way to incorporate the heteroskedasticity consistent SE's and output them in a familiar and easy to interpret format is to use coeftest() in the lmtest package. coeftest(myModel, vcov=vcovHC(myModel)) Andrew Miles On Jan 20, 2011, at 4:42 PM, Achim Zeileis wrote: On Th

Re: [R] Regression Testing

2011-01-20 Thread Achim Zeileis
On Thu, 20 Jan 2011, Mojo wrote: I'm new to R and some what new to the world of stats. I got frustrated with excel and found R. Enough of that already. I'm trying to test and correct for Heteroskedasticity I have data in a csv file that I load and store in a dataframe. ds <- read.csv("boo

Re: [R] Regression Testing

2011-01-20 Thread Mojo
On 1/20/2011 3:37 PM, David Winsemius wrote: On Jan 20, 2011, at 2:08 PM, Mojo wrote: I'm new to R and some what new to the world of stats. I got frustrated with excel and found R. Enough of that already. I'm trying to test and correct for Heteroskedasticity I have data in a csv file that

Re: [R] Regression Testing

2011-01-20 Thread David Winsemius
On Jan 20, 2011, at 2:08 PM, Mojo wrote: I'm new to R and some what new to the world of stats. I got frustrated with excel and found R. Enough of that already. I'm trying to test and correct for Heteroskedasticity I have data in a csv file that I load and store in a dataframe. > ds <- re

[R] Regression Testing

2011-01-20 Thread Mojo
I'm new to R and some what new to the world of stats. I got frustrated with excel and found R. Enough of that already. I'm trying to test and correct for Heteroskedasticity I have data in a csv file that I load and store in a dataframe. > ds <- read.csv("book2.csv") > df <- data.frame(ds) I