Description:This volume constitutes the proceedings of the 4th Conference in Applied Statistics, held in Montreal in 2001, and it consists of research papers dealing with computational and methodological issues of statistical methods on the cutting edge of modern science. It touches on many applied fields such as Bayesian methods, biostatistics, econometrics, finite population sampling, genomics, linear and nonlinear models, networks and queues, survival analysis, time series, and many more.