n=5 (number of objects ranked) (Sum of difference^2) (6)
Now we can substitute in our values from our equation above: = = .7
So =.7 Big deal, what does it mean? The value is basically on a scale of -1 to 1, the closer to -1 the less
alike the rankings are, the closer to 1, the more alike the rankings are. As you can see Deven and Biff's ranking of cars
were fairly close.