A Binomial Distribution describes the probability of an event that only has 2 possible outcomes. For Example, Heads or tails.
A Box Cox Transformation is a calculation that rearranges the dataset into a normal distribution. The data must be positive and continuous.
What Is ILSSI? The International Lean Six Sigma Institute (ILSSI) is a globally recognized certifying body dedicated to promoting best practices in Lean Six Sigma through standardized training and certification programs. Their approach blends the rigor of Six Sigma statistical methods with the adaptability of Lean principles to improve processes across industries. ILSSI certifications are (more…)
Chi-Square Variance Test: The Definitive Guide for Six Sigma Practitioners The chi-square variance test is an essential statistical tool in the Six Sigma toolkit, used to test hypotheses about the variability of a process. Whether you are verifying a supplier’s claim, evaluating the impact of a process improvement, or assessing consistency, understanding how to apply (more…)
The chi-square test of independence (also called a chi-square test of association) determines whether two categorical variables are statistically independent of each other. In Six Sigma, this is extremely useful for analyzing contingency tables. For example, you might want to see if defect occurrence is independent of the shift, or if customer satisfaction ratings are (more…)