Confidence Interval for the MedianAndri Signorell
Kudus AInternational Association of EngineersLecture Notes in Engineering & Computer ScienceIbrahim, N.A. and Kudus, A. (2007). Bootstrap confidence interval for the median failure time of three-parameter Weibull distribution, World Congress on Engineering, 7, 836-839....
confidence intervalMedian absolute deviationoutlierIn this study, we calculate confidence intervals for the mean of a normal data and a contaminated normal data. Some robust estimators against outliers are also considered to construct confidence intervals that are more resistant to outliers than the ...
A nonparametric asymptotic confidence interval for the median survival time is developed for the case where data are subject to arbitrary right censoring. This is accomplished by inverting a generalization of the sign test for censored data. A simulation study shows that this nonparametric confidence ...
For the problem of estimating the median of an unknown continuous distribution a sequential procedure is proposed which for prescribed 0 < a < 1 and L > 0 yields a 1 - ± confidence interval of width not exceeding L. The expected sample size of the procedure is 0(L2) for L 0.doi:...
Comparing median lethal concentration values using confidence interval overlap or ratio tests Experimenters in toxicology often compare the concentration-response relationship between two distinct populations using the median lethal concentration (L... MW Wheeler,RM Park,AJ Bailer - 《Environmental Toxicology...
The stratified Cox proportional hazards model is introduced to incorporate covariates and involve non-proportional treatment effect of two groups into the analysis and then the confidence interval estimators for the difference in median survival times of two treatments in stratified Cox model are proposed...
With a slight modification of the procedure that we have described for the bootstrap confidence interval for the mean, we can obtain the bootstrap confidence interval for the median. Procedure to find the bootstrap confidence interval for the median 1. Draw N samples (N will be in the ...
Confidence intervals for median survival times under a piecewise exponential model with proportional hazards covariate effects. Brookmeyer and Crowley derived a non-parametric confidence interval for the median survival time of a homogeneous population by inverting a generalization ... T Karrison - 《Stat...
(LC8.5) Construct a 95% confidence interval for the median year of minting of all US pennies. Use the percentile method and, if appropriate, then use the standard-error method.8.5 Interpreting confidence intervalsNow that we’ve shown you how to construct confidence intervals using a sample dra...