confidence intervallognormalm-estimatenon-parametricregressionApproximate confidence intervals are given for the lognormal regression problem. The error in the nominal level can be reduced to O(n 2), where n is the sample size. An alternative procedure is given which avoids the non-robust ...
Confidence Intervals for the Mean of Lognormal Data with Excess Zeros In this paper, we consider an approach based on the adjusted signed log-likelihood ratio statistic for constructing a confidence interval for the mean of l... L Tian,J Wu - 《Biometrical Journal》 被引量: 11发表: 2010年...
Olsson U: Confidence intervals for the mean of a log- normal distribution. Biometrics J 2005;13:8.Olsson, U.: Confidence intervals for the mean of a log-normal distribution. Journal of Statistics Education 13(1) (2005)OLSSON, U. 2005. Confidence intervals for the mean of a log-normal ...
To construct a confidence interval for the mean of a log-normal distribution in small samples, we propose likelihood-based approaches - the signed log-likelihood ratio and modified signed log-likelihood ratio methods. Extensive Monte Carlo simulation results show the advantages of the modified signed...
Confidence intervals for normal, lognormal, and Pearson Type III quantiles based on asymptotic theory are shown to fail to contain the true 100year flood and other design events with the specified frequency confidence level. Intervals which contain normal or lognormal quantiles with the desired confi...
Although methods for estimating arithmetic means of lognormal distributions from samples are becoming better known, methods for determining the precision of estimates by confidence intervals are not. In this paper, four approximate intervals are compared with the computationally cumbersome exact interval. ...
Log-normal distribution and Weibull distribution are considered. The measures of skewness under the consideration are 1.0, 3.0, 5.0, respectively. The sample sizes are 10, 30, 50 and the confidence levels are 0.95. The consideration has two steps. First, the confidence level of interval ...
This comparison demonstrates that the use of the approximate confidence interval can markedly underestimate the upper limit of the confidence interval when n is small and if SL is above 3 dB(A). 展开 关键词: confidence intervals lognormal distribution occupational noise exposure sampling ...
, X n that are independent and identically N ( μ , σ 2 ) distributed. Suppose that we have uncertain prior information that μ = 0. We answer the question: To what extent can a frequentist 1 α confidence interval for μ utilize this prior information?关键词:...
摘要: Statistical estimation of the difference between normal means with known coefficients of variation has been investigated for the first time. This phenomenon occurs normally in environment and agricult关键词: Coverage probability Expected length Welch-Satterthewaite con¡¥dence interval ...