The ability to use the Basic Fitting and Data Statistics tools is not available in MATLAB when only the default set of menus is available.
To work around this limitation, you can set the HandleVisibility property of the GUI to 'on' and the MenuBar property of the GUI to 'figure'. This can be achieved by following the steps bellow:
1. Right-click on your FIG file and choose 'Open in GUIDE'
2. Choose VIEW> PROPERTY INSPECTOR
3. Change the propety 'HandleVisibility' from 'callback' to 'on'.
4. Set the property 'MenuBar' to 'figure'