This is a preview. Log in through your library . Abstract This paper describes how qualitative variables may be used in regression studies. A factorial model with convariates is assumed. The ...

Age regression occurs when someone reverts to a younger state of mind. This retreat may be only a few years younger than the person’s physical age. It could also be much younger, into early childhood ...

This is a preview. Log in through your library . Abstract In estimating the regression coefficient of y on x, we can sometimes increase precision by using supplementary observations, u. We need to ...

Successful investing requires the ability to distinguish long-term trends from the short-term noise that moves stock prices on a minute-to-minute basis. One way to tune out the random oscillations and ...