1. Open a new or existing document Microsoft Word.
2. Click to place the cursor in the spot where you want the x-bar symbol to appear.
3. Press 'Ctrl' + 'F9.' A gray box enclosed in brackets appears.
4. Click in-between the two brackets.
5. Type or paste the following: EQ \O(x,¯)
6. Click anywhere outside the box.
7. Click Office button, then 'Print' and 'Print Preview.'
8. Close the Print Preview. The x-bar symbol appears in place of the gray box.