[R] missing values in logistic regression

2004-10-29 Thread Avril Coghlan
? (marked with *s above) I will be very grateful for any help, sincerely, Avril Coghlan University College Dublin, Ireland __ [EMAIL PROTECTED] mailing list https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide! http://www.R-project.org

[R] test for difference between non-independent correlations

2004-07-27 Thread Avril Coghlan
-independent correlations using R by some other method? I will greatly appreciate any help, thankyou, Avril Coghlan (University College Dublin, Ireland) __ [EMAIL PROTECTED] mailing list https://www.stat.math.ethz.ch/mailman/listinfo/r-help PLEASE do read

[R] regression slope

2004-07-20 Thread Avril Coghlan
regressions: fm1 - lm (x ~ y) fm2 - lm (a ~ b) and asking if the slope of fm1 is less than the slope of fm2. Is this easy to do in R? I will be very grateful for any help. regards, Avril Coghlan (University College Dublin, Ireland) __ [EMAIL PROTECTED

[R] testing effects of quantitative predictors on a categorical response variable

2004-06-09 Thread Avril Coghlan
Hello, I have a small statistics question, and as I'm quite new to statistics and R, I'm not sure if I'm doing things correctly. I am looking at two quantitative variables (x,y) that are correlated. When I divide the data set according to a categorical variable z, then x and y are more