文章基本信息

标题：Corrigendum to “Adoption and Frequency of Precision Soil Testing in Cotton Production”
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作者：Dayton M. Lambert ; Burton C. English ; David C. Harper 等
期刊名称：Journal of Agricultural and Resource Economics
印刷版ISSN：1068-5502
出版年度：2014
卷号：39
期号：2
页码：291-291
出版社：WAEA
摘要：The authors regret that the above paper contained an error in the calculation of the survey expansionweights (Lambert et al., 2014, p. 110). Using the notation of the paper, the expansion factor for thelth stratum was introduced as wl =agbh=ngh, where g indexes states and h indexes farm size class.This is in fact the correct expression if Sinkhorn’s (1964) RAS method were used. However, Irelandand Kullback’s (1968) cross-entropy method was used to estimate the expansion factors, and divisionof variables a and b by the survey response frequency (ngh) is unnecessary. The typographical errorhas no bearing on the empirical analysis.
关键词：frequency; Poisson-hurdle regression; post-stratification survey weight estimation;precision soil sampling