Vegetable Demand Trends Gained from the lnvestigation and Analysis of Commodity Distribution from Nagoya Central Wholesale Market

Abstract

Using the vegetable distribution records of the Nagoya Central Wholesale Market for the 35 years, from 1955 to 1990 respectively, we studied the trend in vegetable demand.
The main method of data analysis was regression analysis.
The annual transition of distributed vegetables was classified to five patterns.
Ranking the top 15 selling vegetables sold over this 35 year period, individually, and comparatively to vegetable sold as a whole.
Results show that, even though types of vegetables varied as a whole, the top 15 selling vegetables items varied little in type, and comparative quantity over time, against vegetables as a whole. There were also no significant (statistical) differences in type or quantity, by year, of these 15 vegetable items. The annual variations based on monthly distribution figures were classified by seasonal variation patterns four types.
Although variety and quantity were shown not to have changed significantly, the prices of the top 15 items decreased in 1975 and 1990, and inversely, in both cases, to vegetable items as a whole.