Determining whether a variable is deterministic or stochastic has been my biggest problem till date and sadly, every time I have failed in classifying . The problem arises when the variable morphs from deterministic to stochastic and back to deterministic and I have no clue how to go about it.

I think the best approach that I am following now is : Why give a damn :) Let it be any variable .as long as you make it an independent variable , life goes on :)