Google Analytics

# Google Analytics
http://drupal.org/project/google_analytics

download
http://ftp.drupal.org/files/projects/google_analytics-6.x-2.2.tar.gz
extract
copy to /sites/all/modules/

# enable module
Administer > Site building > Modules
/admin/build/modules
check: Google Analytics

# add tracking for anonymous user only
Administer > Site configuration > Google Analytics
/admin/settings/googleanalytics

General settings
Google Analytics account number: add UA-XXX nubmer

Role specific tracking settings > Add tracking for specific roles
check: anonymous user