The Hootsuite Analytics overview automatically analyzes two time periods: the one you select, and the corresponding length of time before that. For example, if you select the last 7 days, the overview will automatically pull data from the previous 14 days. Why would this be a benefit?

to put your analytics results in a more historical perspective to provide an estimate of future trends this is not a feature of the overview module to add fullness to your metrics reports to make it easier to generate ROI …
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