| dc.description.abstract | Sweet potato has good prospects as a leading agricultural commodity. North Sumatra
sweet potato is exported in fresh form and the rest is to meet domestic needs. This
study aims to analyze the factors that influence the demand for sweet potatoes in
North Sumatra, determine the demand function for sweet potatoes and determine the
elasticity of demand for sweet potatoes in North Sumatra. The data used is data
sourced from the Central Statistics Agency (BPS) of North Sumatra in 2001-2021,
the method used is the Almost Ideal Demand System (AIDS) analysis. The results of
the analysis show that the factors that influence the demand for sweet potatoes in
North Sumatra significantly are the price of sweet potatoes from the demand equation
for corn, rice, cassava and sweet potato. While corn prices, rice prices, cassava prices
and total expenditure value both from the demand equation for corn commodities,
rice commodities, cassava commodities, and sweet potatoes commodities have no
significant effect. The sweet potato demand system model explained by the AIDS
model is consistent with demand theory, testing the parameters of the three
restrictions namely adding up, homogeneity, and slutsky symmetry succeeded in
fulfilling the demand theory model. The price elasticity value itself shows that the
elasticity value of sweet potato is elastic, while the elasticity value of cassava is
inelastic. The value of cross-price elasticity is known that in general all commodities
have varying elasticity, some are positive and some are negative. The value of the
elasticity of expenditure shows that the commodity of corn is included in the inferior
goods, the commodity of rice is included in the normal goods while the commodities
of cassava and sweet potato are included in the superior/luxury goods. | en_US |
