d. Now stretch these two clusters out. Place the two extremes of the first cluster at either end of the horizontal axis, and the two extremes of the second cluster at each end of the vertical axis. This will leave you with four quadrants: the top right quadrant will represent a world in which both clusters are at the extreme positive end of their scales. The bottom right quadrant will represent a world in which the horizontally placed cluster is at the top end of its scale, but the vertically placed cluster is at the negative end of its scale, and so on.