Lead time variability refers to what, and what are its consequences?

Lead time variability refers to what, and what are its consequences?

• A. Lead time variability has no effect on planning.
• B. Fluctuations in lead time; increases safety stock, reduces service levels, and complicates planning.
• C. Lead time variability shortens forecast accuracy.
• D. Lead time variability only affects supplier negotiations.

Answer: (B)

Lead time variability means fluctuations in the time between placing an order and receiving it. When arrivals can be sooner or later than planned, you face uncertainty about when inventory will be available. To guard against stockouts, you typically increase safety stock, which raises carrying costs but improves protection against late deliveries. Because deliveries can come at unpredictable times, service levels—your ability to meet promised fill rates—tend to fall unless you compensate with more stock or tighter coordination. Planning becomes harder overall, as reorder points, quantities, and production scheduling must be adjusted to accommodate the uncertain timing of arrivals. This is why the best description emphasizes fluctuations in lead time and the resulting need for more safety stock, lower service levels, and more complex planning. The other ideas miss the timing impact, suggesting no effect, a change only to forecast accuracy, or a narrow focus on negotiations, which doesn’t capture the broader consequences.

Lead time variability means fluctuations in the time between placing an order and receiving it. When arrivals can be sooner or later than planned, you face uncertainty about when inventory will be available. To guard against stockouts, you typically increase safety stock, which raises carrying costs but improves protection against late deliveries. Because deliveries can come at unpredictable times, service levels—your ability to meet promised fill rates—tend to fall unless you compensate with more stock or tighter coordination. Planning becomes harder overall, as reorder points, quantities, and production scheduling must be adjusted to accommodate the uncertain timing of arrivals. This is why the best description emphasizes fluctuations in lead time and the resulting need for more safety stock, lower service levels, and more complex planning. The other ideas miss the timing impact, suggesting no effect, a change only to forecast accuracy, or a narrow focus on negotiations, which doesn’t capture the broader consequences.