Re: [R] Multiple regression in R - unstandardised coefficients a

2011-08-23 Thread Ista Zahn
On Tue, Aug 23, 2011 at 7:54 AM, JC Matthews j.c.matth...@bristol.ac.uk wrote: Thankyou for your replies, you've answered my question and given me more to think on.  I guess it is unwise to draw any conclusions from the standardised results for these reasons. No, by all means try to draw

Re: [R] Multiple regression in R - unstandardised coefficients a

2011-08-23 Thread JC Matthews
Thankyou for your replies, you've answered my question and given me more to think on. I guess it is unwise to draw any conclusions from the standardised results for these reasons. James. --On 22 August 2011 17:30 +0100 ted.hard...@wlandres.net wrote: On 22-Aug-11 15:37:40, JC Matthews

[R] Multiple regression in R - unstandardised coefficients are a different sign to standardised coefficients, is this correct?

2011-08-22 Thread JC Matthews
Hello, I have a statistical problem that I am using R for, but I am not making sense of the results. I am trying to use multiple regression to explore which variables (weather conditions) have the greater effect on a local atmospheric variable. The data is taken from a database that has

Re: [R] Multiple regression in R - unstandardised coefficients are a different sign to standardised coefficients, is this correct?

2011-08-22 Thread Ista Zahn
Hi JC, You have interactions in your model, which means that your models specifies that the coefficients for hum, wind, and rain should vary depending on the value of the other two (and depending on their own value actually, since you also have quadratic effects for each of these variables in

Re: [R] Multiple regression in R - unstandardised coefficients a

2011-08-22 Thread Ted Harding
On 22-Aug-11 15:37:40, JC Matthews wrote: Hello, I have a statistical problem that I am using R for, but I am not making sense of the results. I am trying to use multiple regression to explore which variables (weather conditions) have the greater effect on a local atmospheric variable. The