Re: [R] lm with a single X and step with several Xi-s, beta coef. quite different:

Hi, Sounds like suppression -- see e.g., http://www.jstor.org/stable/2988294?seq=1 for a discussion. Since this is not an R question but a statistical one, it may be more appropriate to post this question to a statistics forum such as http://stats.stackexchange.com/ Best, Ista On Tue, Aug 7,

[R] lm with a single X and step with several Xi-s, beta coef. quite different:

Hi, (R version 2.15.0) I am running a pgm with 1 response (earlier standardized Y) and 44 independent vars (Xi) from the same data =a2: When I run the 'lm' function on single Xi at a time, the beta coefficient for let's say X1 is = -0.08 (se=0.03256) But when I run the same Y with 44 Xi-s with