Hi all, I am doing a two-sided DW test: H0: rho = 0 H1: rho =/= 0 My understanding is that most test statistics tables are one-sided. It's the way they created the table. So from online, by doing Googling, I found a bunch of DW tables for Confidence Level 5%. Those tables can answer my two-sided question at 5x2 = 10% confidence level. But what if I want two-sided test at 1% and 5% confidence level? Then I need 0.5% and 2.5% tables on those one-sided table. My sample size is 278, and the number of parameters is 2, these adds to the hardship of finding a good table... Could anybody give me some pointers of two-sided DW tables or 1-sided DW table with 0.5% and 2.5% confidence levels? Thanks a lot! Moreover, I appreciate any pointers about electronic tables that I can use in programs, I want to implement DW test myself, but let the program searching a table automatically... Thanks a lot! [[alternative HTML version deleted]]