頁籤選單縮合
題名 | 水果需求彈性之測定=Estimating Demand Elasticities of Fruits |
---|---|
作者 | 魯真; 葉敬軒; Hsu, Jane L.; Yeh, Ching-hsuan; |
期刊 | 農產運銷論叢 |
出版日期 | 20000300 |
卷期 | 5 2000.03[民89.03] |
頁次 | 頁177-191 |
分類號 | 431.25 |
語文 | chi |
關鍵詞 | 水果需求彈性; Tornqvist指數; Fruit demand elasticities; Tornqvist index; |
中文摘要 | 本研究利用線性近似理想需求體系(LA/AIDS)推估臺灣地區鳳梨、木瓜、蓮霧、 葡萄、及梨子之彈性,在實證上比較Stone指及及Tomqvist指數於AL/AIDS模型在彈性推估 值上的差異,及以Anderson及Blundell、Eales及Unnevehr及Chalfant三種彈性推估方法所 推估結果的不同。Tomqvist指數不會受到衡量單位的改變而變動,符合指數的特性且可用於 取代Stone指數以減少估計及檢定上的偏差。皆析結果顯示以Tomquivst指數之LA/AIDS模 型所推估彈性的絕對值較小,而用Stone指數之LA/AIDS模型推估之彈性絕對值較大,表示 實證中用Stone指數估計彈性時,有可能會受衡量單位的影響而產生較高的彈性值。在不同 的彈性估計方法中,以Chalfant估計法所推估的彈性值受到不同指數的影響最小,其次是Eales 及Unnevehr估計法,再來是Anderson及Blundell估計法。彈性估計結果顯示鳳梨及葡萄較 具價格彈性:鳳梨與葡萄互相替代:葡萄與梨子具互補性:葡萄及梨子的支出彈性大於1, 鳳梨及木瓜的支出彈性小於1。 |
英文摘要 | Demand for pineapples, papayas, wax apples, grapes, and pears in Taiwan is analyzed utilizing the LA/AIDS model. Elasticity estimates are compared among results from incorporating stione's geometric price index as typically applied in LA/AIDS and results from incorporating Taomquivst index in LA/AIDS. Elasticities estimated from three commonly used formulas are also evaluated. Results indicate elasticity estimates of LA/AIDS using Stone's price index are usually over evaluated. Using the formula suggested by Chalfant yields elasticities that are only slightly affected by incorporating different indexes in the LA/AIDS. Elasticity estimates reveal that pineapples and grapes are more price elastic; pineapples and grapes are substitutes; grapes and pears are complements; expenditure elasticities of grapes and pears are larger than one, while those of pineapples and papayas are less than one. |
本系統之摘要資訊系依該期刊論文摘要之資訊為主。