Interval Estimation for the Coefficient of Variation for Lognormal Population with Added Zero Values

摘要：

This paper considers the coefficient of variation for Iognormal population with added zero values. Specifically,we are interested in interval estimation. We propose the exact approach and the generalized pivotal approach. The simulation results indicate that when proportion of zero observations are large the generalized pivotal approach has better than the exact approach. The coverage probabilities of the generalized pivotal approach are generally close to the nominal level and the average lengths are smaller than that of the exact approach.

关键词： coefficient of variation lognormal distribution confidence interval generalized confutence intervals coverage probability

作者: Nitaya Buntao Sa-aat Niwitpong

作者单位: Department of Applied Statistics Faculty of Applied Science King Mongkuts University of Technology North Bangkok Bangkok, Thailand

会议类型: 国际会议

会议名称: The 10th International Conference on Intelligent Technologies(第十届智慧科技国际会议 InTech09)

会议地点: 桂林

会议语种:英文

页码: 238-241

在线出版日期: 2009-12-12（万方平台首次上网日期，不代表论文的发表时间）