Our wheelan readings this week offer an example of a weight-related regression where a very small person could end up having a negative body weight. likewise, weight ends up being partially determinable by adding variables that have nothing to do with the biology of the individual. discuss your explanation for how these factors can be true of our regression analysis, and yet not invalidate the regression itself. discuss whether or not we should consider these variables as causes of a persons weight, and if not, how should we think about these variables? how do you explain that negative body weight possibility?