let me know if this calculation is fine or it needs some modification

Base line performance metrics The data was collected on flow rates (Appendix A), Flow time (Appendix B), and the inventory was calculated by the application of Little's Law (Appendix C). Average flow rates per hour Hour Hourly Average 5 pm to 6 pm 6 pm to 7 pm 7 pm to 8 pm DAY 1 DAY 2 DAY 3 December 3 December 4 December 5 20 13 11 4 11 8 7 Average Flow Rate per Hour Figure 2. Average flow rates per hour 3 15 6 7.666666667 8 Figure 2. The average flow rate was calculated by adding up all the hourly throughput average from Spm to 8pm and divided by 3. Average flow rate 9 customers per hour. Throughput Inventory Flow Time 44 181 4.11 Hour 5 pm to 6 pm 6 pm to 7 pm 7 pm to 8 pm Average 18 173 9.61 23 123 28 159 Figure 3. Average flow time 5.35 6.36 Figure 3. Flow time: the average Flow time of the process is 170 seconds or 3 minutes. During peak times (5:00 pm to 8:00 pm) on weekends the average flow time is higher 6.36 minutes. Inventory: Average Inventory 159. I= Throughput (R) x Average Flow Time (T)