An approximate confidence interval is proposed for a robust measure of relative dispersion—the coefficient of quartile variation. The proposed method provides an alternative to interval estimates for other measures of relative dispersion. © 2005 Elsevier B.V. All rights reserved.

A procedure for non-invasive imaging of the optical attenuation coefficient variation of in vivo thick organs/tissues is developed. The laser back-scattered surface profiles at various locations of human forearm, by multi-probe reflectometer, are measured. These profiles are matched by iterative procedure, with that as obtained by Monte Carlo simulation and the corresponding values of attenuati...