Dear Members, I need to calculate Non-parametric 95% coverage interval for Lab data. Though I know the parametric method to calculate 95% coverage interval, I have no idea how to calculate this coverage interval in Nonparametric way. I will appreciate if anybody can help me in this. Thanks & Regards Madan Gopal Kundu -------------- Madan Gopal Kundu Biostatistician, Ranbaxy Labs. Ltd. Gurgaon, Haryana India Web: http://www.freewebs.com/madanstata mobile: 91-9868788406 e-mail: [log in to unmask] Connect with friends all over the world. Get Yahoo! India Messenger at http://in.messenger.yahoo.com/?wm=n/