Dear All, could you please confirm (or disconfimr, and then please explain:-)) my understanding of the results generated by the following code: hdr.den(rnorm(200,55,3)) result: [,1] [,2] 99% 47.07170 63.26864 95% 48.83670 61.55108 50% 53.04884 57.37916 the way I am interpreting the results is that in this normally distributed data set with the mean of 55 and SD of 3: 1. 99% of all randomly generated values lie within 47.07170 and 63.26864 2. 95% of all randomly generated values lie within 48.83670 and 61.55108 3. 50% of all randomly generated values lie within 53.04884 and 57.37916 apreciate the help, Sincerely, Andras [[alternative HTML version deleted]]