Hi,

On the left of the Analytics screen, you will see the usual menu. Click on 'Visitors', then 'Visitor Loyalty' and then on 'Length of Visit'.

This will give you a graph of how many visitiors you had for the various time length intervals.

Also, remember to set the correct date rage (top right) for the period you need stats on.

Regards.

Jesse L. Rowe
Registered Google AdWords Account Manager
GKS GLobal Consult