Question

How do you measure effectiveness of processes using statistical quality control?

Answer 1

Objective of every process is to produce the goods which conform to the established standards and create value for the users by providing them, what is best desired by them. The product / service standards are designed according to the needs of the customers, and a process must comply to those standards, if it has to win more customers and retain the old ones.

Statistical tools are wonderful means to judge whether the process output conforms to the standards, i.e are they within the prescribed control limits, since owing to a number of constraints, it is seldom possible to produce the products that never vary in their characterstics and are uniform. The statistical tools determine the process variations through some well designed tests and techniques that not only find out the degree, frequency and nature of variations from the norms, but also help to trace their origins to process shortcomings and malfunctions that enable process correction. These tests also determine whether a process is capable of producing products at the desired degree of effectiveness, leading to the improvement exercise.