Requirement: Don’t show all responses in a SharePoint survey to End-users! Only the Administrators should get all responses.
Go to Survey Settings >> Advanced Settings >> Set the Item-level Permissions as Read access & Edit access to: Only their own. This will hide all responses in the SharePoint survey.
End-users will get “Contributor” access to respond to SharePoint Surveys. So, this setting will restrict them from getting the responses of other users. However, this setting will not control Administrators, so they’ll get to see all responses.
The above trick is applicable to both SharePoint 2007 and SharePoint 2010 survey to hide responses.
Another Way (for MOSS 2007):
Edit the Survey’s overview.aspx (Site Actions >> Edit Page), in List view web part, choose “Modify Shared Web Part” and then set the “Selected View” as “Summary View”. This will hide the link “Show a graphical summary of responses” from the page and display only the total number of responses.
Revert the above change by changing “Selected view” to get the “Show a graphical summary of responses” link back on the survey page. If you want admins to get all results in the graphical view, create a new view and secure it.