英文文献：Random Variation In Measurement Of Corn Grade Factors
英文文献作者：Elam. T.E.,Hill, L.D.
英文文献摘要：
The U.S.D.A. grain grading system has drawn considerable attention due to allegations of misgrading. An analysis of the potential role of random error in the grading system is presented. It is concluded that random variation may be a major cause of changes in grain grades under conditions of repeated sampling.