Abstract
In the past two decades there has been considerable variation in the quantities of potatoes produced in Maine and marketed to given states and regions. These variations were found to contain very distinct trends. Production in Maine and the quantities of fresh potatoes shipped to all regions of the U.S. except the Southeast show a strong declining trend. The trend accounted for between 71 and 99 percent of variation for those regions with declining trends.
Resumen
En las dos últimas décadas ha habido considerable variación en las cantidades de papas producidas en Maine y vendidas a otros estados y regiones. Se encontró que estas variaciones tenían muy distintas tendencias. La producción en Maine y las cantidades de papa fresca enviadas a todas las regiones de los Estados Unidos excepto el sudeste muestran una fuerte tendencia declinante. El tiempo explicó entre el 71 y 99 porciente de la variación para aquellas regiones con tendencias declinantes.
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Literature Cited
Nie, Norman H., C. Hadlai Hull, Jean G. Jenkins, Karin Steinbrenner, and Dale H. Bent. 1975. Statistical Package for the Social Sciences, Second Edition. McGraw-Hill Company.
Suttor, Richard E. and Thomas D. Corrigan, “Statistical Tests for Trend and Cycle in Time Series,” Ag. Econ. Mimeo Series No. 20, July, 1967, Department of Agricultural Economics, College of Agriculture, University of Maryland, College Park, Maryland.
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Kezis, A.S., Johnston, E.F. & Baldwin, P. A determination and estimation of trend in Maine’s fresh potato shipments. American Potato Journal 57, 417–428 (1980). https://doi.org/10.1007/BF02854457
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DOI: https://doi.org/10.1007/BF02854457