How can I delete my test results?

Go to Responses when you are viewing the results dashboard.

Delete test responses - Responses tab

Check the box at the top of the list to select all responses. Then click Delete selected responses. Be aware - this action is irreversible. 

Delete test responses - Delete selected responses button

Tip: If you only want to delete individual responses, you can do this one by one next to each individual response.

Delete test responses - delete individual response