Hi Jamie,

Good question.

Often, the number of users in each channel adds up to a larger number than the total number of users because some users use multiple channels. The percentage given for each channel refers to the percentage of the total of all channels. New users and sessions are unique values and so are not repeated across channels. A user can only be counted as new once.

Hope this helps!

Best,
Paul

I have a question regarding channel groupings. If a single user has multiple sessions falling into more than one channel grouping, how is this reported in the “Users” column in the channel grouping report?

Thank you for your help.

Hi Indy,
Please have a look at this article and you will exactly know the differences:
https://online-metrics.com/custom-channel-groupings/

Best,
Paul

Hi Robbert,

This article will be helpful:
https://supermetrics.com/blog/google-analytics-sampling-data-studio

Wrote it a couple of years ago, should still work!

Best,
Paul

Hi Paul,

Thanks for your quick reply. You are right, the ‘issue’ appears to be caused by sampling.

Any additional quick tips or articles you can share on how to limit the sampling?

Cheers,
Robbert

Hi Robbert,

Thanks for the heads up!
Could it be that sampling is applied in Google Data Studio?
Also see: https://www.seerinteractive.com/blog/google-data-studio-sampling/

Best,
Paul

Great, article. I have a question related to using the Default Channel Grouping in reporting through the Google Api.

When using a graph in Data Studio to display conversions per Default Channel, it gives me a higher amount of conversions, than when looking at the same channel during the same week in GA360. For example:

Data studio report – Email: 68 conversions
GA360 – Email: 53 conversions

Even stranger, when I adjust the date period in the data studio report, the number of conversions per channels changes as well for each week. For example, when I look back a full year, the above number of 68 conversions changes to 79 conversions.

What could be the reason for this?

Yes, that could be the case and sampling might be involved here.

Thanks for your response
Are we getting aggregated data in default channel grouping?
Is this the reason that i am getting more no ?