Which of the following process has the lowest process capability?

Process USL LSL Average Sigma

1 100 90 96 1 unit

2 120 110 120 1 unit

3 120 110 115 0.45 unit

		process 3 with Cp = 3.70 and Cpk = 3.70
		process 1 with Cp = 2.77 and Cpk = 0
		process 2 with Cp = 1.67 and Cpk = 0
		process 1 with Cp = 1.67 and Cpk = 1.33
		process 3 with Cp = 3.70 and Cpk = 1.33