Created attachment 122354 [details] shows the bug (or feature) When calulating a standard deviation from different cells it can happend to get a worng result if a speator at the end. A example file in the apendix.. The result of =STABW(A1;B1;C1;D1;E1) and =STABW(A1;B1;C1;D1;E1;) is differnt! We Found this in different Versions (3.x and 5.04.2) on Mac and Linux Computers in english and german version =STABW(1;2;3;4;5) -> Result 1,5811388301 =STABW(1;2;3;4;5;) -> Result 1,8708286934
Alas, it's not a bug, it's a feature. An empty (missing value) argument is treated as zero in this case. Excel does it the same.