Lean Six Contol Chart Needs Corrections

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onan0406

Mathematics

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Need help to correct the following today.

Rethink your answer to the following:

 

Do you agree with their interpretation that the original process is stable?YES


Also, check your values for the Moving Range Chart.  Your answers for the Average and the UCL are off.

 

 


Book 3.xls

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Objective: Your Black Belts developed the following data and created this control chart for sandwich preparation times. They say that the process is stable and shows that the average prep time is 1.7512 minutes and that individual prep times will not exceed 1.9205 minutes. They also say that it's very good because it shows very little vari Instructions for you: Part I Do you agree with their interpretation? (see chart below) HINT: Use the 11 Shewhart Rules for Stability as the basis for your decision. Data: I-MR Chart of Current Sandwich Prep Times UCL=1.9205 I n d iv id u a l V a lu e 1.9 1.8 _ X=1.7512 1.7 1.6 LCL=1.5818 3 1 5 7 9 11 O bser v ation 13 15 17 19 1 UCL=0.2080 M o v in g R a n g e 0.20 0.15 0.10 __ MR=0.0637 0.05 0.00 LCL=0 1 3 5 7 9 11 O bser v ation 13 15 17 19 Part II You and your team work to eliminate all known assignable causes from this process. You think you have accomplished this and collect the following data on the new process. Calculate the control chart center line and control limit values for an I-MR chart and use the Guidelines posted on the Discussion Board (and discussed in Virtual Class 4) to determine if this process is now stable. Revised Process Prep Times (in minutes) 1.536 1.589 1.482 1.561 1.547 1.502 1.506 1.500 1.550 1.542 1.432 1.573 1.592 1.557 1.502 1.534 1.482 1.492 1.600 1.518 AboveWay Sandwich, Inc. Customer Satisfaction Improvement Deliverable: Control Chart Student last name: Your last name here YES Do you agree with their interpretation that the original process is stable? I CHART: Type here If "NO", please identify BY NAME which of the 11 Shewhart Tests for Stability EACH chart fails. MR CHART: Type here Revised Process Prep Data INDIVIDUALS CHART: What did you get for a center line? 1.5300 What did you get for an upper control limit? 1.6661 What did you get for a lower control limit? 1.3939 Revised Process Prep Data MOVING RANGE CHART: What did you get for a center line? 0.0511 What did you get for an upper control limit? 0.1672 What did you get for a lower control limit? 0.0000 Is the revised process stable? Yes I CHART: Type here If "NO", please identify BY NAME which of the 11 Shewhart Tests for Stability EACH chart fails. MR CHART: Type here How to submit an Assignment: To send each assignment to your instructor: Click-and-hold the LEFT mouse button at the TOP-LEFT corner of the peach-colored box, then while holding down on that button, drag to the LOWER-RIGHT corner of the box. This will highlight the entire peach-colored box. Release the mouse button. Do a CTRL-C. This will copy what has been highlighted. Go to your Villanova website and follow this sequence: 1. COMMUNICATE 2. CLASS ROSTER 3. Click on your instructor's email envelope icon 4. Type "Check My Work - Control Chart" in the SUBJECT box. 5. Click once inside of the message box 6. Do a CTRL-V. This will paste your deliverable into this box. Don't be concerned if after you paste it, the appearance of the text is out of alignment. It will straighten out after you hit SEND. 7. SEND Check your SENT ITEMS folder afterward to see how it straightened out. preparation times. ause it shows very little variation. mes UCL=1.9205 _ X=1.7512 LCL=1.5818 UCL=0.2080 __ MR=0.0637 LCL=0 hink you have chart center line Board (and discussed in Current Sandwich Prep Times (in minutes) 1.6434 1.8623 1.7611 1.7049 1.7888 1.7469 1.8223 1.7793 1.7122 1.7562 1.6798 1.7013 1.7750 1.7400 1.8122 1.7778 1.7233 1.7410 1.7143 1.7807 S ere ere 00 61 39 11 72 00 s ere ere
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