Z-scores signify a vital notion within Lean Six Sigma , assisting you to evaluate how far a value lies from the typical of its dataset . Essentially, a z-score indicates you the degree of standard deviations between a specific value and the average . Higher z-scores imply the data point is above the mean , while negative z-scores indicate it's belo

The Chi-square test acts as a statistical method used to assess the connection between two or more categorical variables. That evaluates whether there is a substantial difference between the observed and expected frequencies in a dataset. The test utilizes the concept of chi-square, which represents the sum of squared differences between the observ