when we subtract our expected from our observed, then we get the values now you are going to square each of the values to get rid of the negatives and then you are going to divide each value by the e in that same row so this .91 were taking 75.17 and dividing by 82.67 so now we are going to need a total for that, the total for this column x squared is the total for this column so so if we sum that up, (inaudible)