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I think now I have got some understanding of the things. y ~ x1+x2 first adds x1 to the model and then adds x2 . But y~x2+x1 adds x2 first, so the value we get are different. please correct...

I have written a program which deals with median in 2-D plane and the property of it under rotation. The program takes the co-ordinates through mouse-click at any point of the co-ordinate plane and then does...

Thanks for the help, but that thread just gives some copy-pasted information from the FAQ, which I've already read. The R-Pad project is recommended there and that site seems to be down. Is there any way to...

[sorry for the repost. I forgot to switch off formatting last time] I have two assignment problems... I have written this small code for regression with two regressors . n <- 50 x1 <- runif(n,1,10) x2 <- x1 + rnorm(n,0...

anyone please explain why this happens.. I know this happens when x1 and x2 has different sizes. but here x1 and x2 have same dimension. On Sun, Dec 14, 2008 at 9:26 PM, Tanmoy Talukdar <tanmoy.talukdar at gmail...

running anova() on intact12 and intact 21 gives two different results!! > anova(intact12) Analysis of Variance Table Response: y Df Sum Sq Mean Sq F value Pr(>F) x1 1 663.18 663.18 203.065 < 2.2e-16 *** x2...

Why do you think that running lm() twice on those two models is going to help me? They are identical models and hence we get identical results.The second question is now alright. I had some misunderstanding about it. Please...

Why do you think that running lm() twice on those two models is going to help me? They are identical models and hence we get identical results.The second question is now alright. I had some misunderstanding about it. Please...