KEY DEFINATIONS OF WEBANALYTICS

HIT:A request for a file from a webserver.
PAGE VIEW:A request for a file whose type is defined as page.
                        ->A single page view may generate multiple hits.
VISIT/SESSION:A visit is defined as series of page requests from the same uniquely identified  
                                    client with a time of not more than 30 minutes between each request.
                                 ->A visit expires only after 30 mts time delay.
                                 ->If someone leaves a site,then returns within 30 minutes,this will count as
                                      one visit but two sessions. 
FIRST VISIT/FIRST SESSION:A visit from visitor who has not made any previous visits.
NEW VISITOR:Somebody visits your site for the first time,that visit is considered as
                                  new visitor.
                                ->A visitor that has made no previous visits.
RETURNING VISITOR:A visitor that has made atleast one previous visit.
IMPRESSION:An impression is each time an advertisement loads on a user screen.
BOUNCE RATE:The percentage of visits where the visitor enters and exists at the same page
                              without visiting any other pages on the site between.
VISIBILITY TIME:The time a single page viewed.
PAGE VIEW DURATION:Average amount of time that visitors spend on each page of the site.
SESSION DURATION:Average amount of time that visitors spend on the site each time they visit.
FREQUENCY:How often visitors come to website