A green belt is going to monitor the process by collecting more than 10 samples per group. Which of the following control charts would be most appropriate ? a. I-MR b. Xbar R c. X bar S d. np chart (Don't Hand writing in solution) .

Please do not give solution in image format thanku Please use exact numbers

Six Sigma Analytical Tools include all of the following except Run Chart Variable chart Flowchart Process Control Chart Checksheet

Which of the following is NOT usually part of a control chart a. Centre line b. Lower control limit c. Out of control line d. Upper control limit

9. A pizza delivery service wants to track their delivery times. They take eight samples of four deliveries and record the following data. What are the upper and lower control limits of their R-chart?  (Note:  Although it looks similar, the data in the table below is different from the data in the table relating to the UCL and LCL for the X-bar chart.)   Sample # 1 2 3 4 5 6 7 8 Item #1 21.1 20.2 24.1 22.6 21.2 20.0 22.0 20.2 Item #2 21.7 20.6 21.0 22.1 24.1 24.2 24.6 24.9 Item #3 23.5 24.9 23.2 23.0 20.6 22.8 23.4 22.8 Item #4 20.0 23.5 24.8 25.0 20.7 23.2 23.3 24.5   Group of answer choices 7.0, 0.5 9.3, 0.0 8.5 0.0 10.1, 0.0