In that case, the weighted average from another thread works well. wa =: * %&(+/) [ mask wa"1 i. 4 5 2 7 0 16.5
On Wed, Dec 2, 2009 at 12:06 PM, Roger Hui <[email protected]> wrote: > And what is the problem? > > I consider 0 to be the correct answer for the average > if the mask is all 0. > > ---------------------------------------------------------------------- For information about J forums see http://www.jsoftware.com/forums.htm
