Abstract
In several stages of production and sales activities, stocks as a buffer between input and output play an important role in a sense of smoothing the flow of products.The form of distribution of the inventory at the end of a period has for many years been considered a normal distribution on the assumption that a distribution of demand is normal but has little authority.This paper presents the distribution of the inventory at the end of a period, taking into account an exponential distribution of demand, exponential smoothing for forecasting, and periodic reorder rule.
