We investigate properties of a diagnostic-envelope method for evaluating normal probability plots of regression residuals that was proposed by Atkinson (1981), implemented by BMDP (Hardwick 1987), and ...

Residual plots provide visual displays for assessing how well the model fits the data, for evaluating the distribution of the residuals, and for identifying influential observations. Surface plots are ...

The diameters of 50 steel rods are measured and saved as values of the variable DISTANCE in the following data set: * data measures; input diameter @@; label diameter='Diameter in mm'; datalines; ...

Over the last few decades, Lean Six Sigma has become an integral part of the world of business. It is one of the most ...