The Focus panel in the view's drawer shows the name and size of the folder that is currently shown in the view. This is not necessarily the folder that was scanned, because you can navigate down into subfolders.
The path of the file (or folder) that is currently selected is also shown, together with its size. This is information is also displayed at the bottom of the view. It is repeated here because long paths may not entirely fit in the view. Furthermore, the panel also shows exact sizes, instead of only an approximation.