Random Arrivals: Inter-Arrival Times from the Exponential Distribution
All lessons
- Random Arrivals: Inter-Arrival Times from the Exponential DistributionFree
- The Arrival Clock: Running Sums & Clock Times Pro
- Service Times: Exponential & Normal Draws from Given Random Numbers Pro
- The Single-Server Queue Table: Start, Wait & Finish Pro
- Queue Performance: Average Wait, Utilisation & Queue Length Pro
- Two Servers: Sending Each Customer to the Next Free Barista Pro
- Simulation vs. Theory: M/M/1 Formulas & Confidence Intervals Pro
- Staffing What-If: Barista Cost vs. Waiting Cost Pro
You are not signed in — the lab works, but your progress is not saved. Start free
Read first
From RAND() to a frozen run
To build your own simulation, type =RAND() in B7 and copy it down. Every change in the workbook then draws a new morning. When you want to report or compare one run, copy the u column and use Paste Special → Values so it stops changing. In newer Excel, =RANDARRAY(20) fills 20 numbers at once.
Loading the spreadsheet…