Apply Little's Law to estimate salon work-in-process and protect schedule buffers.
Saturday peak has 4 client arrivals per hour and an average client journey of 90 minutes. Little's Law: average clients in system = arrival rate x average time in system The manager watches chair occupancy only, so shampoo waits, checkout delays, and processing handoffs look like separate small issues. Arrival rate Clients arrive every 15 minutes, so arrival rate is 4 clients per hour. Use the rate for the whole system, not just one stylist. Time in system Average journey is 90 minutes, which is 1.5 hours. Include check-in, processing, waiting, service, and checkout. Expected load 4 clients/hour x 1.5…
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