What is the formula for the(ba)^2 / 12variance of a uniformdistribution (v=?)Which is an example of semi-xml filesstructured dataMedian of [35, 20, 50, 10, 30,3045, 20]?What is the weighted averageof numbers [35, 20, 50, 10, 30,45, 20] with weights [3, 2, 1, 2, 3,2, 1]