search for: tp14521967p14554462

Displaying 1 result from an estimated 1 matches for "tp14521967p14554462".

2007 Dec 28
3
How to catch data from the different dataframes and lm problem?
Dear all: I am a new R-user and I have 2 questions about it. 1) I have a dataframe. Based on ?formulation? and ?subject?, a dataframe is split into 4 dataframes. The example is as follows. Moreover, I want to calculate ?test? value for these 4 dataframes. My question is that the ?test? values not correct and I do not know where the problem is. 2) There are 12 ?test? (y) values from