Z-scores signify a crucial concept within the world of Lean Six Sigma, helping you to evaluate how far a observation lies from the typical of its population. Essentially, a z-score shows you the quantity of standard deviation between a specific value and the average . Large z-scores denote the data point is above the typical, while negative z-score

The Chi-square test serves as a statistical technique used to assess the connection between two or more categorical variables. It determines whether there is a substantial difference between the observed and expected frequencies in a dataset. The test utilizes the concept of chi-square, which indicates the sum of squared differences between the obs