Estimation of Jointly Normally Distributed Demand for Cross-Selling Items in Inventory Systems with Lost Sales

Table 3

Parameters and notations.

Parameters/notations	Meaning
	Indices of items
	Unknown original “naked” demand for items and
	The realized original “naked” demand of items and
	Observed demand, i.e., the realized quantity of sales of items and
	Means of demand (demand expectations) for items and to be estimated
	Standard deviation of demand for items and to be estimated
	Correlation coefficient of the original demand to be estimated
,	Order quantities of items and
	Cross-selling coefficients
	Means of the sampled sales data of items and
	Estimators of and
	Estimators of and
	Estimator of
	Quantile of standard normal distribution
	Total number of sampled data (sample size)