Information about expected data variances between Target and Adobe Analytics when using and not using Analytics as the Reporting Source (A4T). A4T significantly reduces data variance.
With A4T, both Analytics and Target reporting of activities use Analytics data exclusively, so there is little variance between the solutions in Target activity reports. In some circumstances, however, customers compare Target data to Analytics data outside the scope of the A4T integration and, thus, experience the variance issues described below.
Here are a few scenarios in which you can experience expected data variance:
A4T allows for the possibility that a Target hit (top of page) occurs, but no Analytics hit (bottom of page) occurs. For example, suppose a visitor loads the page, but closes the browser before the Analytics call triggered. In these cases, A4T excludes the Target hit from the data. Allowing Target hits (again, top of page) to count as Analytics hits in the absence of an actual Analytics call creates inconsistencies with the data set in Analytics (visitor inflation, and so forth).
If a redirect test is set up in Target to split traffic 50/50 (or 25/25/25/25, and so forth), user behavior might not be divided evenly. If you see an uneven split, it simply means that one group of users failed to execute an Analytics call on the landing page more than the other groups did. This failure to execute the Analytics call for one group caused the Target hit for that user to be excluded, creating the unevenness.
Adobe hopes to address this issue in the future as Adobe teams work toward A4T on the Adobe Experience Platform. Adobe teams are determining how to handle these different events occurring at different times on the page.
Variances of 15-20% are normal, even with similar data sets. Systems that count differently can result in much higher data variances, as much as 35-50%. Sometimes, variances can be even higher.
Although actual data can vary significantly, trends are usually consistent. As long as the differences and trends remain consistent, the data remains valuable and useful. If the differences and trends are inconsistent, it could mean that something is set up incorrectly. In this case, contact your account representative for assistance.
Analytics uses a system based on visits and transactions, but Target uses visitor-based metrics. Whenever a visitor opens a page, it counts as a visit in Analytics, but Target does not count the visit until the conditions set in the activity are met.
Reports in Target show performance based on the conversion mbox selected when defining the activity. However, this conversion mbox data is not sent to Analytics, which has its own conversion variables as defined by your Analytics tagging implementation. Where you expect identical data (for example, if a retailer’s order confirm that page contains both a conversion mbox and an Analytics purchase event), data can differ due to the placement of these tags. In general, trends in the two products’ reports are similar.
Expected data variances can be caused by both technical and business variances.
The following can cause data variances based on technical differences:
The following can cause data variances based on business differences: