The web statistics do not directly reflect the number of visitors to your site, but provides you with far more detailed information aimed at following trends. The statistics are measures in terms of "server requests". Each item on a page represents a server request. Also measured are the number of page. Therefore if your website has 6 pages and each page has an average of 5 items (e.g graphics), then a single visitor browsing to every page on your website will generate 30 server requests. 

The web statistics are useful to give an indication of an upward or downward trend in visits to your site over a time period, the most popular pages, sites you are being referred by e.g search engines, etc. 

Here are some definitions about the statistics: 

• The General Summary contains some overall statistics about the data being analysed: the most important being the number of requests (the total number of files downloaded, including graphics); the number of requests for pages (just counting the various pages on your site); the number of distinct hosts (the number of different computers requests have come from); and the amount of data transferred in bytes. 

• The host is the computer which has asked you for a file (often called the "client"). The file might be a page (i.e., an HTML document) or it might be something else, such as an image. By default filenames ending in (case insensitive) .html, .htm, or / count as pages. 

• The total requests counts all the files which have been requested, including pages, graphics, etc. 

• The requests for pages obviously only counts pages. One user can generate many requests by requesting lots of different files, or the same file many times.

• The referrer for a request is the place that the user (or his computer) heard about your file from. If they followed a link to reach a page, it will be the previous page. In the case of a graphic on a page, the referrer will be the page containing the graphic.

• Successful requests for pages refers to those lines on which the file requested was named and was a page.

For further information click on the link below: 
http://www.analog.cx/docs/webworks.html