Thread:User talk:LArron/I'd appreciate your advice/reply (2)

We are talking conditional expectations: the probability to succeed is quite high provided you have some knowledge of statistics and are willing to do a little programming.

There is a package named quantreg which seems to include all the functions you need. And here is a description how it works (though I think the example is for a single independent variable. However the model can easily be extended to y ~ x1 + x2 + x3 + x4...)

If you have more detailed questions, feel free to ask!