Process Capability Analysis

Process Capability Analysis
Description	Process Capability Analysis is a computational method for comparing the output of a manufacturing process to its engineered specification limits.
Why to use	Statistical Analysis
When to use	To compare the output of a process with its specification limits.	When not to use		On non-normal or textual data.
Prerequisites	The data should follow a normal distribution.
Input	Numerical data	Output	Process Data Process Capability Report for Overall Capability Within Capability
Statistical Methods used	Shapiro Wilk’s Test for Normality Descriptive statistics	Limitations	It can be used only on numerical data.

The Process Capability Analysis is mainly used in the manufacturing industry to measure the performance of a process. It checks how well the given process meets a set of specification limits by comparing the observed and expected values. It also takes into consideration a Lower Specification Limit and Upper Specification Limit. The values that lie between these two are considered as acceptable values. The output of Process Capability Analysis shows various performance metrics and W Statistic, and p-Value for Shapiro Wilk’s Test for Normality.