LEAN SIX SIGMA: CHEGG PLEASE DON'T CHANGE THE SUBJECT

The lead time of serving the hot coffee at coffee shop more than 15 minutes. The staffing model of the shop has one cashier, one barista and a guard. The number of staff, equipment and raw materials has been found sufficient. Based on initial data analysis, the volume of customers has been stable.

a.) create a fishbone diagram

b.) Based on your list of potential root causes or hypothesis, generate a dummy data and use the 12 weeks data points to set the dummy data that will be generated. Then create a graphical analysis. Use only the following: Pareto Chart, Box Plot or Histogram, Time Series, and Scatterplot

Coffee Shop Weekly Average Lead Time (mins) Months Week Lead Time (minutes) May 1 13.45 May 2 15.21 May 3 16.78 May 4 13.25 June 5 14.37 June 6 15.84 June 7 16.79 June 8 18.02 July 9 16.65 July 10 17.85 July 11 18.69 July 12 18.32 Coffee Shop Weekly Average Lead Time (mins) Months Week Lead Time (minutes) May 1 13.45 May 2 15.21 May 3 16.78 May 4 13.25 June 5 14.37 June 6 15.84 June 7 16.79 June 8 18.02 July 9 16.65 July 10 17.85 July 11 18.69 July 12 18.32