Question

The difference between the upper specification and the lower specification for a process is 0.60. The standard deviation is 0.10. Based on the given​ information, the process capability​ ratio, Cp = _______.

Answer 1

Answer: 1.00

Step-by-step explanation: the capability ratio is used to define the ability of a processes to produce products that meets standard requirements, that is, to produce outputs with specification limits. This holds true for processes that are in statistical probabilities or limits.

The capability ratio is gotten by dividing the process spread by the specification spread and here we look for smaller-is-better characteristics.

Cp = Process spread/specification spread

Cp = (6 x standard deviation) / specification spread

= (6 x 0.1) / 0.6

= 0.6/0.6 = 1

This means that the process variation is consuming 100% of the specification window.