The Report data view is the output you get when you run any of the functions under the Reports tab. Reports are generated similarly to lists; the difference is that reports are, by design, specifically formatted for printing.
NOTE: Most reports are tailored for landscape printing.
Depending on which report you run, you will notice query fields similar, if not identical, to the filter fields found when you generate lists. Regardless of whether you are generating a list or report, the queries behave in the same manner.
Unlike lists, which allow you to manipulate the resulting data on-the-fly, reports generate static documents. All of the report view customizations must be done through the Options tab on the report query.
For additional information on running and customizing the various reports, see the section entitled Reports.