Stepwise Regression

Stepwise Regression using MInitab shall be discussed through this article. Stepwise regression removes and adds variables to the regression model for the purpose of identifying a useful subset of the predictors. Minitab provides three commonly used procedures: standard stepwise regression...[ read more ]

Z Score Calculation

The Z-score Calculation Z Score Calculation is a important aspect of six sigma projects Also Z is one of the common yardsticks for measuring process capability is a Z-score.  Z-score can be understood as number of standard deviation that fits between...[ read more ]

Understanding ANOM

Understanding ANOM – Analysis of Means Understanding ANOM – Analysis of Means is very important for Six Sigma practitioners. Use the ANOM interactions plot to test the hypothesis that there is no interaction between the factors in a two-way design...[ read more ]