Which service level metrics are commonly used?

Which service level metrics are commonly used?

• A. On-time delivery rate only
• B. Cycle service level and fill rate
• C. Inventory turnover
• D. Cost per unit

Answer: (B)

The concept being tested is how service levels are measured in inventory and delivery performance. The best choice pairs two standard service level metrics used to gauge availability and fulfillment from stock: cycle service level and fill rate. Cycle service level is the probability that you won’t stock out within a replenishment cycle. It directly informs safety stock decisions and how often customers can get what they want without facing a stockout across each cycle. Fill rate measures the portion of customer demand that is satisfied immediately from available stock, reflecting how much of what customers want is delivered without backorder or delay. Together, they give a practical picture of how well you’re meeting demand in both the frequency of stockouts and the completeness of orders. Options focusing on on-time delivery, inventory turnover, or cost per unit capture timing, efficiency, or cost, but not the complementary service-level perspective of stock availability and immediate fulfillment that cycle service level and fill rate provide.

The concept being tested is how service levels are measured in inventory and delivery performance. The best choice pairs two standard service level metrics used to gauge availability and fulfillment from stock: cycle service level and fill rate.

Cycle service level is the probability that you won’t stock out within a replenishment cycle. It directly informs safety stock decisions and how often customers can get what they want without facing a stockout across each cycle. Fill rate measures the portion of customer demand that is satisfied immediately from available stock, reflecting how much of what customers want is delivered without backorder or delay. Together, they give a practical picture of how well you’re meeting demand in both the frequency of stockouts and the completeness of orders.

Options focusing on on-time delivery, inventory turnover, or cost per unit capture timing, efficiency, or cost, but not the complementary service-level perspective of stock availability and immediate fulfillment that cycle service level and fill rate provide.