lineal model

  1. M

    Beginner's question: Is profit/loss data always ratio in nature? How to treat it?

    Hello, I'm afraid this is another beginner's question. I've only recently grasped the fundamentals of linear and multiple linear regression and I still have the following nagging doubt. I'd like to analyse some sales data for the purpose of forecasting future performance. My dependent...
  2. G

    Problem with a regression in "R" - Dataset Workinghours

    I'm a student. I'm working on a research using the statistical program "R 2.15.1". Here's my problem: how i can do a regression considering only values over a certain limit? Giorgio