Why are there discrepancies in my MediaManager Reports data?

Question: Why are there discrepancies in Report data on the new MediaManager Reports tab? For example, if I define a date range from 8-1-13 to 1-1-14 and run a report on the total media stream views, the total is 2206; however, when I run another report with date range 8-1-13 and ending date 1-31-14, the total media stream view is 1982. Why does the total media stream data show a smaller number for a larger date range?

Answer: The Granicus Reporting system measures internal and citizen access to your published video content. To do this we leverage Google Analytics data systems.  Through Google Analytics, we capture all of the relevant viewership activity.  Since activity across Granicus clients produces large datasets, Google uses sampled data when reporting.  This means that when we retrieve the information from Google, they only use a subset of the available viewership data to provide directionally accurate information.  We have built our systems to minimize the impact this has to any one client but customers may still see some data variability.  We are working with Google to lessen the impact of this data sampling – or get rid of it altogether.