which variable is independent of $x? what type of variable is x$ and x$ what type of random variable is $Z? why is $_1$ independent of $_2$? which variable is independent of x does x_2$ have independent chi square what is the difference between the chi square and the independent random variable what is the independent variable for x what's the independent variable for chi square are x and x independent random variables is $x_a_$ chi square independent of $x_a__? is $x independent of $z which variable is independent chi square what variables are independent of x in chi square analysis are x and x random variables independent how independent is the variable x? if a variable is independent, does it have a value of x_1$? which variable is independent in chi square? what variable is independent of chi squarish independent, chi square distributed random variable