Message-ID: <16953917.1075840451387.JavaMail.evans@thyme> Date: Wed, 15 Aug 2001 10:05:00 -0700 (PDT) From: s-news-owner@lists.biostat.wustl.edu To: s-news@wubios.wustl.edu Subject: [S] confidence intervals for Weibull shape parameter Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Transfer-Encoding: 7bit X-From: s-news-owner@lists.biostat.wustl.edu X-To: s-news group X-cc: X-bcc: X-Folder: \mark fischer 7-12-02\Notes Folders\Discussion threads X-Origin: FISCHER-M X-FileName: mark fischer 7-12-02 LNotes.nsf Splus 2000 r3. I have fit a 2-parameter Weibull distribution to a data vector (fire-free intervals in forests) and would like to compute the probability that the shape parameter is greater than 1. I can use bootstrap() [I presume] to compute the standard error. Is there a closed expression for CIs? (I imagine a normal approximation would be pretty lame here). Thanks in advance for any suggestions. _______________________________________________________________________ DON MCKENZIE Research Ecologist College of Forest Resources, Box 352100 University of Washington Seattle, WA 98195 206.616.4095 dmck@u.washington.edu _______________________________________________________________________ --------------------------------------------------------------------- This message was distributed by s-news@lists.biostat.wustl.edu. To unsubscribe send e-mail to s-news-request@lists.biostat.wustl.edu with the BODY of the message: unsubscribe s-news