Imagine you're a researcher studying how sleep affects mood. To explore the connection, you would look at two key "variables": sleep (how much someone gets) and mood (how happy or irritable they feel) ...

In the bad old days, I only used constants as a way to assign names to values. Things like this, for example: Private Const DaysInWeek As Integer = 7 However, these days most of my variables are ...

Constant and almost constant variables are zeroed and ignored. As long as the dependent variable is not constant, PROC TRANSREG produces an iteration history table for all models, not just models in ...