Sample Size Requirements for Assessing Statistical Moments of Simulated Crop Yield Distributions
نویسندگان
چکیده
منابع مشابه
Sample Size Requirements for Assessing Statistical Moments of Simulated Crop Yield Distributions
Mechanistic crop growth models are becoming increasingly important in agricultural research and are extensively used in climate change impact assessments. In such studies, statistics of crop yields are usually evaluated without the explicit consideration of sample size requirements. The purpose of this paper was to identify minimum sample sizes for the estimation of average, standard deviation ...
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• Why do we need to estimate the entire distribution? The distribution of an economic entity is of fundamental importance to decision makers, especially if they are risk averse and the underlying distribution is not Gaussian, a situation that calls for consideration of factors beyond the usual mean variance analysis. In particular the tail distribution plays a particularly crucial role in risk ...
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BACKGROUND Sample size calculations should correspond to the intended method of analysis. Nevertheless, for non-normal distributions, they are often done on the basis of normal approximations, even when the data are to be analysed using generalized linear models (GLMs). METHODS For the case of comparison of two means, we use GLM theory to derive sample size formulae, with particular cases bei...
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ژورنال
عنوان ژورنال: Agriculture
سال: 2013
ISSN: 2077-0472
DOI: 10.3390/agriculture3020210