Hi, I wonder if therE isn't a bug in the latest cvs for the p-value finder. When I put in mean=3, std= 3 and value=4 in the pull-down menu I get the following output: "Standard normal: area to the right of 4 = 3,16712e-005 (two-tailed value = 6,33425e-005; complement = 0,999937)" It seems as though the conversion to zscores hasn't been made. Best regards, Lars Lars Palsson Syll Professor of Civics Malmo University Sweden