If the data being analyzed is classified as DISCRETE, the following DISCRETE distributions are commonly used in Six Sigma projects. A Six Sigma project manager should be familiar with the following:
1) Uniform Distribution (can also be CONTINUOUS  there is a slight difference)
4) Hypergeometric Distribution
Other discrete distributions are Geometric, Multinomial, and Negative Binomial (aka Pascal) but are not covered within this site and generally not needed to pass a YB,GB,BB certification exam.
Click here for an overview of Continuous Distribution types.


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