You can use the Microsoft equation editor from within Excel.

Alternately, you can look for a font that contains that symbol (a font
newsgroup would likely be able to give more specific information). It
has been reported that the Math Ext font contains the Xbar symbol. If
you have old MS CD's you might find it there
http://support.microsoft.com/default...b;en-us;179595
Alternately
http://www.columbia.edu/~em36/wpdos/wptoword.html
claims to have it in a downloadable file.

Jerry

TZ wrote:

We cannot type the mathematical equation for standard deviation without the X
bar symbol. Does anyone know if there is one available?
TZ