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Abstract
The quantity demanded in a market can be decomposed into two components: the number of purchasers and the quantity per purchaser. Focusing on these two components, the demands for different types of single-flavor fruit juice commodities are analyzed. The approach allows the market demand elasticities to be estimated as the sum of elasticity estimates for the numbers of purchasers and the elasticity estimates for the quantities per purchaser. The method of seemingly unrelated regressions is employed to estimate the equations for the two demand components for the different types of juice.