It’s important to figure out which question you want to answer. Once you know that, you can develop your null and alternative hypotheses.
Z Score and Process Capability are used together to get a view of your process. Here’s how to use and calculate one from another.
Z scores and process sigma help us know what chance a process has of meeting its target. This article discusses the relation between the two concepts.
Contingency Tables are a 2-way classification table containing frequencies of how often things appear. Used to test for independence.
Basic Six Sigma Probability functions lay the foundation for higher-order statistical analytics that is required to solve complex problems.