An improvement team at a construction workshop is working on improvement projects in a number of areas One project is focused on improving the preparation of bids The team has collected this baseline data Turn around time When a staff member starts to assemble a bid, there is often missing or incomplete information The team took a sample of bids created over the prior 24 months and recorded the number of business hours that passed until all of the missing information was collected The current standard is to compile all required information in less than 32 hours (4 business days) Losses Two staff members complete the cost estimates for bids The team collected data from a sample of bids and counted the number of bids that underestimated the cost of raw materials by more than 5 percent by staff member and month Create a bar chart with the specification interval for turn around time (see below) Calculate the process capability index and comment on whether the process is capable of meeting the turnaround time standard Create a control chart for turn around time (see chart above) Is the process stable What should the improvement team do next 1 4 6 Month 201801 18 7 31 8 36 8 37 8 34 3 201802 15 6 33 4 37 2 15 6 35 4 35 2 15 3 31 1 37 7 201803 31 2 25 1 26 0 35 3 21 8 35 9 32 0 24 1 201804 28 3 22 1 33 2 26 0 23 7 201805 21 0 25 8 21 2 19 3 29 0 20 0 201806 201807 29 9 14 9 14 5 14 9 27 2 17 7 12 8 24 4 21 2 19 0 26 4 18 4 28 4 26 7 12 8 201808 201809 201810 31 5 34 2 29 8 26 8 30 6 35 7 15 0 38 2 23 0 30 2 35 8 24 6 201811 28 2 28 0 21 9 26 6 30 9 25 0 33 0 23 0 20 0 28 8 24 0 201812 201901 201902 30 7 26 6 34 9 37 1 11 8 36 6 30 7 37 9 29 2 19 2 34 8 201903 32 3 32 7 37 2 10 9 22 3 33 9 30 2 17 1 32 4 30 6 38 4 201904 22 7 39 4 17 9 12 5 33 7 201905 27 0 21 8 12 2 33 3 19 0 25 6 14 8 20 1 26 5 32 6 30 6 23 8 13 9 201906 201907 201908 201909 25 4 30 4 36 6 13 3 11 0 17 5 24 4 24 8 14 8 19 8 20 8 29 7 10 6 30 0 201910 38 4 18 0 34 1 35 0 29 8 17 8 27 7 201911 12 6 26 5 39 6 27 0 25 8 28 7 15 2 201912 16 6 39 8 32 6 24 0 22 6

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Question: An improvement team at a construction workshop is working on improvement projects in a number of areas. One project is focused on improving the preparation

An improvement team at a construction workshop is working on improvement projects in a number of areas. One project is focused on improving the preparation of bids. The team has collected this baseline data:

Turn-around time - When a staff member starts to assemble a bid, there is often missing or incomplete information. The team took a sample of bids created over the prior 24 months and recorded the number of business hours that passed until all of the missing information was collected. The current standard is to compile all required information in less than 32 hours (4 business days).
Losses Two staff members complete the cost estimates for bids. The team collected data from a sample of bids and counted the number of bids that underestimated the cost of raw materials by more than 5 percent by staff member and month.

Create a bar chart with the specification interval for turn-around time (see below). Calculate the process capability index and comment on whether the process is capable of meeting the turnaround time standard.

An improvement team at a construction workshop is

Create a control chart for turn-around time (see chart above). Is the process stable? What should the improvement team do next?

1 4 6 Month 201801 18.7 31.8 36.8 37.8 34.3 201802 15.6 33.4 37.2 15.6 35.4 35.2 15.3 31.1 37.7 201803 31.2 25.1 26.0 35.3 21.8 35.9 32.0 24.1 201804 28.3 22.1 33.2 26.0 23.7 201805 21.0 25.8 21.2 19.3 29.0 20.0 201806 201807 29.9 14.9 14.5 14.9 27.2 17.7 12.8 24.4 21.2 19.0 26.4 18.4 28.4 26.7 12.8 201808 201809 201810 31.5 34.2 29.8 26.8 30.6 35.7 15.0 38.2 23.0 30.2 35.8 24.6 201811 28.2 28.0 21.9 26.6 30.9 25.0 33.0 23.0 20.0 28.8 24.0 201812 201901 201902 30.7 26.6 34.9 37.1 11.8 36.6 30.7 37.9 29.2 19.2 34.8 201903 32.3 32.7 37.2 10.9 22.3 33.9 30.2 17.1 32.4 30.6 38.4 201904 22.7 39.4 17.9 12.5 33.7 201905 27.0 21.8 12.2 33.3 19.0 25.6 14.8 20.1 26.5 32.6 30.6 23.8 13.9 201906 201907 201908 201909 25.4 30.4 36.6 13.3 11.0 17.5 24.4 24.8 14.8 19.8 20.8 29.7 10.6 30.0 201910 38.4 18.0 34.1 35.0 29.8 17.8 27.7 201911 12.6 26.5 39.6 27.0 25.8 28.7 15.2 201912 16.6 39.8 32.6 24.0 22.6