Subtraction Control Chart
1-1 = 0 2 -2 = 0 3 -3 = 0 4 -4 = 0 5 -5 = 0 6 -6 = 0 7 -7 = 0 8 -8 = 0 9 -9 = 0 10-9 = 1 11-9 = 2 12-9 = 3 13-9 = 4 14-9 = 5 15-9 = 6 16-9 = 7 17-9 = 8 18-9 = 9
2 - 1= 1 3 -2 = 1 4 - 3= 1 5 -4 = 1 6 -5 = 1 7 -6 = 1 8 -7 = 1 9 -8 = 1 10-8 = 2 11-8 = 3 12-8 = 4 13-8 = 5 14-8 = 6 15-8 = 7 16-8 = 8 17-8 = 9
3 -1 = 2 4 -2 = 2 5 -3 = 2 6 -4 = 2 7 -5 = 2 8 -6 = 2 9 -7 = 2 10-7 = 3 11-7 = 4 12-7 = 5 13-7 = 6 14-7 = 7 15-7 = 8 16-7 = 9
4 -1 = 3 5 -2 = 3 6 -3 = 3 7 -4 = 3 8 -5 = 3 9 -6 = 3 10-6 = 4 11-6 = 5 12-6 = 6 13-6 = 7 14-6 = 8 15-6 = 9
5 -1 = 4 6 -2 = 4 7 -3 = 4 8 -4 = 4 9 -5 = 4 10-5 = 5 11-5 = 6 12-5 = 7 13-5 = 8 14-5 = 9
6 -1 = 5 7 -2 = 5 8 -3 = 5 9 -4 = 5 10-4 = 6 11-4 = 7 12-4 = 8 13-4 = 9
7 -1 = 6 8 -2 = 6 9 -3 = 6 10-3 = 7 11-3 = 8 12-3 = 9
8 -1 = 7 9 -2 = 7 10-2 = 8 11-2 = 9
9 -1 = 8 10-1 = 9