You can add metrics and dimensions to the Request Wizard: Step 2 to define the Analytics layout of the data in your request. The list of metrics and dimensions in Report Builder follow the menu layout displayed in Reports and Analytics.
Metrics are numeric values. They consist of quantitative information about activity on your website, such as Page Views, Visitor Profile, Click-throughs, Reloads, Average Time Spent, Date, Units, and so on. Report Builder organizes metrics in several groups, which follow standard grouping in Analytics:
Dimensions are non-numeric values and dates, such as gender, month, age, loyalty, monitor resolution, and so on. Dimensions are descriptions or characteristics of metric data that can be viewed and compared, such as in breakdown reports.