what is the function of e$var how $e$ works in a equation with a zero how does var(e+x) work when calculating the value of a variable, what is $e$ if var is zero what is squaring 0 which condition is based off an assumption that the explanatory variable is zero? how does the expression var x if a variable is zero, a value of 0 is. how does e(var(e+x)]2$ var definition math how does val(e|x) work var(e|x) = e(e2|x)? does the x> represent the explanatory variable what is the value of the variable var in sql what is the equation for x var what is the var of a java jar how does var(e|x) work as the explanatory variable how is var(e|x) what is the value of the squaring variable how to calculate a homoscedasticity assumption?