Data/hora: 13/06/2024 19:12:47

Provedor de dados: | 31
País: | United States
Título: | Crop Yield Skewness and the Normal Distribution
Autores: | Hennessy,   David A.
Data: | 2009-05-15
Ano: | 2009
Palavras-chave: | Conditional distribution; Crop insurance; Negative skewness; Normal distribution; Statistical laws; Crop Production/Industries; Risk and Uncertainty.
Resumo: | Empirical studies point to negative crop yield skewness, but the literature provides few clear insights as to why. This paper formalizes three points on the matter. Statistical laws on aggregates do not imply a normal distribution. Whenever the weather-conditioned mean yield has diminishing marginal product with respect to a weather-conditioning index, then there is a disposition toward negative yield skewness. This is because high marginal product in bad weather stretches out the yield distribution's left tail relative to that for weather. For disaggregated yields, unconditional skewness is decomposed into weather-conditioned skewness plus two other terms and each is studied in turn.
Tipo: | Journal Article
Idioma: | Inglês
Identificador: | http://purl.umn.edu/50084
Relação: | Journal of Agricultural and Resource Economics&gt;Volume 34, Number 1, April 2009
Formato: | 19