Forum Discussion
Data from Google Analytics Doesn't Match!
I've got response from the product team.
This is expected behavior. The API we're using for Google Analytics is the one available to free users, and that API is known to return less accurate values for high volume sites due to the way it samples data. Unfortunately, the API for Google Analytics Premium customers is significantly different than that for the free users, so we'd need to implement a new connector specifically for Premium in order to get the more accurate values. This is not currently on our roadmap. Customers who would like to see this feature should request it or upvote it (if already there) at ideas.powerbi.com.
Best Regards,
Herbert
You need access to non sampled raw/hit data and do the aggregations yourself. This is generally a very good idea working with Power BI - since it's aggregated nature. When applying aggregates to an aggregation tool, bad things can easily happen. Users (even pro analysts - yes I have seen it :) will be "seduced" to sum, avg, etc. already distinctly counted metrics or averages, max's, min's etc.
You need to sort of data governance and stay in the taxonomy of Google Analytics (or consciously move out of it), you need either to purchase the pricy GA 360 or use Scitylana's Google Analytics services.
With these 2 options you can move the raw data to a BigQuery table and to a combination of DirectQuery and In-memory import. This works really great!