801 22nd St NW
Washington, DC, 20052
Areas of Expertise
Statistical Computing, Multivariate Analysis, Environmental Statistics, Nonparametric Statistics
2007 - Present: Professor of Statistics, The George Washington University
2007 - 2013: Chair and Professor of Statistics, The George Washington University
Spring 2005 - Fall 2005: Sabbatical, Center for Ecological and Environmental Statistics, Department of Statistics, Eberly College of Science, Pennsylvania State University.
1997 - 2007: Associate Professor of Statistics, The George Washington University
Fall 1997- Spring 1998: Sabbatical, Environmental Protection Agency, Office of Water, Washington, D.C.
1991 - 1997: Assistant Professor of Statistics, The George Washington University
1990 - 1991: Assistant Professor of Statistics and Mathematics, The American University
Ph.D.: Statistics, The American University, 1990.
M.S.: Computer Science, The American University, 1982.
B.S.: Computer Science and Mathematics, The American University, 1981.
Efficient Estimation of a Bivariate Symmetric Distribution Function. Statistics and Probability Letters, 2003, 63, 25-34.
Efficiency of Test for Independence after Box-Cox Transformation, Journal of Multivariate Analysis, 2005, Vol. 95, pp 107-118 (with J. Freeman).
A Cautionary Note on Estimating the Standard Error of the Gini Index of Inequality. Oxford Journal of Economics and Statistics, 2006, Volume 68, Issue 3, 385-390 (with J.L. Gastwirth).
Robust Estimate of the Correlation Coefficient for Bivariate Normal Distribution using Ranked Set Sampling. Journal of Statistical Planning and Inference, 2006, Volume 136, Issue 1, 298-309. (with G. Zheng).
Hotspot Detection with Bivariate Data. Journal of Statistical Planning and Inference: Special Issue: In Celebration of the Centennial of The Birth of Samarendra Nath Roy (1906-1964), 2007, Volume 137, Issue 11, 3643-3654. (with G. P. Patil).
Tests of Bivariate Exchangeability. International Statistical Review, 2008, 76, 2, 203-213.
A Triangle Test for Equality of Distribution Functions in High Dimensions (2010). Journal of Nonparametric Statistic, Vol. 22, no. 6, pp. 1-11. (with Z. Liu).
High Dimensional Generation of Bernoulli Random Vectors (2011). Statistics and Probability Letters, Vol. 81, pp. 1136-1142.
Lens Data Depth and Median. Journal of Nonparametric Statistic (2011), Vol. 23, Issue 4, pp. 1063-1074. (with Z. Liu).
A Multivariate Control Quantile Test Using Data Depth. Computational Statistics & Data Analysis, Volume 57, Issue 1, 2013,Pages 262-270 (Z. Liu, and M. Yang).
On a Characterization Theorem of Symmetry About a Point. Statistics and Probability Letters, 2013 (with J. Behboodian)
Resampling Unbalanced Ranked Set samples. Journal of Agricultural, Biological, and Environmental Statistics, 2013 (with S. Amiri and M. Jafari Jozani).