0:00:00.260,0:00:04.195
Now we need to find what s is? And in this case we're finding the standard
0:00:04.195,0:00:08.852
deviation of each difference. So bring up your spread sheet and in this column
0:00:08.852,0:00:13.621
calculate the difference. And then find the standard deviation using the
0:00:13.621,0:00:17.853
denominator n minus 1. And then write what you get for s.