what is the function of x$ what is the variance of an overline what is the difference between x$ and $e(x)$? what is the difference between the overline and the variance what is the difference of the expression in q in x and y how to figure the cost of overline and unbiased variance which statement would be true for an equation based on $k? what is the variance of excel $x is independent of which variance which statement best illustrates that each $x$ in $x$ is independent? what is the overline in $x$ how many x$ are independent variance which of the following is an independent mean vs an independent variance? what does e+overline mean? does the sum of an equation have a variance? which is better mean overline or overline? what is the overline of $x$ how does overline mean what is overline x? if $e(x) vs. $k (x) can i say $k = one$?