search for: tp25889056p25892047

Displaying 1 result from an estimated 1 matches for "tp25889056p25892047".

2009 Oct 14
2
Handle lot of variables - Regression
Hey, I've got a data set (e.g. named Data) which contains a lot of variables, for example: s1, s2, ..., s50 My first question is: It is possible to do this: Data$s1 But is it also possible to do something like this: Data$s1:s50 (I've tried a lot of versions of those without a result) My second question: I want to do a stepwise logistic regression. For this purpose I use the following