Article Comments - 'Detecting outliers when fitting data with nonlinear regression - a new method based on robust nonlinear regression and the false discovery rate' http://www.biomedcentral.com/1471-2105/7/123/comments The latest comments on the article 'Detecting outliers when fitting data with nonlinear regression - a new method based on robust nonlinear regression and the false discovery rate' 2006-12-05T00:00:00Z This is an RSS newsfeed from BioMed Central It is intended to be used with an RSS reader. For more information about RSS newsfeeds from BioMed Central, visit http://www.biomedcentral.com/info/about/rss/ Details on how to compute the P68 percentile http://www.biomedcentral.com/1471-2105/7/123/comments#247532 <p>Our method depends on computing the 68.72 percentile of the absolute value of the residuals, which we call P68. We neglected to document how we computed this percentile. Hyndman and Fan (The American Statistician, 50: 361-365, 1996) document nine different methods for computing percentiles. We use the method termed 'P7' in that paper, which is the same method used by Excel 2003. </p> Harvey Motulsky 2006-12-05T00:00:00Z