A process is a unique combination of tools, materials, methods, and people engaged in producing a measurable output; for example a manufacturing line for machine parts. All processes have inherent
statistical variability which can be evaluated by statistical methods. The Process Capability is a measureable property of a process to the specification. The output of this measurement is usually illustrated by an
histogram and calculations that predict how many parts will be produced out of specification. Two parts of process capability are: 1) Measure the variability of a process, and 2) Compare that variability with a proposed specification or product tolerance.
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a comparison of the actual variability of a process to the process specification.
A statistical measure of the inherent process variability for a given characteristic. The most widely accepted formula for process capability is six sigma.
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