[R] What questions can be asked given this information?

This is a general statistic question, but maybe ... Suppose there are 1000 persons. In 2002, 400 out of those 1000 persons participated in a questionaire and 330 said they own a homepage. In 2008, 530 out of those 1000 persons participated in a questionaire and 490 said they own a homepage. Wha

[R] Newbie question - how to do it 'right'

I read the documentation carefully, yet I miss the experience to do it right Suppose I have a data.frame DS with this data: Homepage? Willhaveone?When? HP WHP WHEN levels='Yes', 'No' levels='Yes', 'No', 'NV'l