True or False

1. When using a Kanban inventory management system, it is best to carry a sizable level of raw material inventory. 2. If a commercial office cleaning service company predicted its demand for its services by using the number of commercial building permits issued, office leasing and vacancy rates, this would be an example of a qualitative forecasting technique. 3. In real world situations, the amount of safety stock needed is primarily a function of its demand variability. 4. Forecast tend to be more reliable when forecasting individual data points compared to groups (i.e. aggregate)