EOQ model Flashcards
Inventory
idle goods or materials held by an organization to be used in the future
constant demand rate assumption
the eoq model is only valid when the demand rate is constant. This means that a constant number of units is taken from the inventory each period of time
Holding Costs
are the costs associated with maintaining a given level of inventory. They depend on the size of the inventory.
Q
the order quantity
Ch (cost of holding one unit in inventory for a time interval)
= IC (I being the percentage charge over the time interval on C the cost of the item)
Annual holding cost
1/2QCh (average inventory) * (annual holding cost per unit)
D
the yearly* demand
Number of orders per year*
D/Q
Ordering cost is assumed to be
fixed
Annual* Ordering cost
D/Q*Co
TC =
(holding cost) + (ordering cost)
Q* the minimum total cost ordering quantity formula
sqrt(2DCo/Ch) can also find by finding cp of total cost formula
reorder point …… r
(lead time)(lead time demand) r = dm
Sensitivity analysis for EOQ
use a table that shows all combinations of small changes