Dear Sir I am a lecture Department of Mathematics University of Dhaka,Bangladesh. http://www.univdhaka.edu/department/facultyMembers.php?bodyid=MAT&st=25&perPage=25. I saw you are in the author of R-functions for inverse Gaussian distributions.By tried them in my R ,but its not working. I will highly appreciate if you kindly let me know how can i use those functions(d,p,q,r--for inverse Gaussian distribution) Sincerely Sharif Mozumder Lecturer Department of Mathematics University of Dhaka Bangladesh. --------------------------------- Got a little couch potato? Check out fun summer activities for kids. [[alternative HTML version deleted]]